"I spent my whole life in Chicago and never heard of the Jim Shoe. This is a life changer." I expect many people's reactions will be somewhat less enthusiastic after their first bite. Here are mini-profiles of a couple dozen places offering the Jim Shoe. Note that I don't particularly recommend many of these Shoes; in fact I'd recommend
avoiding a fair number of them. In most cases the sandwiches were simply ordered "the usual way" to get an idea of the house style. I've come to the conclusion that almost every Shoe is improved by giardiniera (even more when it's mixed in as the meats are griddled) so I think I'd recommend asking for it as a matter of course. This is by no means a complete list; there are many more Shoes to be sampled.
In alphabetical order . . .
Agee's Pizzeria & Grill, 1118 W Wilson Av
Not a lot of Shoes on the North Side so that alone makes Agee's unusual. The restaurant is adjacent to the Wilson Red Line station, making it easy for many to get to.

As far as I can tell, the Jim Shoe isn't listed anywhere inside the restaurant, only on the printed menu (this one from late 2012). That's unusual. Earlier this month I noticed the Jim Shoe is no longer listed on the printed menu but I'm pretty sure they'll make it on request.

The sandwich is unusual too, with its definite South Asian seasonings. When asked, "Do you want spice?" the answer should be yes. Not your typical Jim Shoe experience for a number of reasons.
Attock Submarine, 3006 E 92nd St
Perhaps not the most inviting exterior . . .

. . . or interior for that matter. Note Jim Shoe toward bottom of wall menu.

Attock's Shoe is straightforward, with simply sliced meats, minimal veggies and gyro sauce only. Nothing special.
Best Subs, 3156 W Chicago Av
Fairly typical exterior.

Jim Shoe displayed on the official menu board.

This one came so loaded with mayo I could only manage a bite.
Big Mike's Gyros, 7859 S State St
Big Mike's is a newer place alongside the Dan Ryan.

Unusually large menu has "Big Mike's Gym Shoe" listed under Italian Submarines. Note absence of bulletproof shield.

Sandwich of cold sliced meats and waxy cheese ranks very low. Big Mike's doesn't seem to understand the concept of the Jim Shoe.
Champ's (closed; see Snapper), 1951 W Garfield Blvd
Even though the menu still says Snapper, the business had been renamed Champ's. The new owners inherited the menu board as well as the Gym Shoe spelling. The business is now Happy Fish & Chicken. I don't know if they still offer the Shoe.
Chicago Philly Steak (closed), 502 E 47th St
This location is now an AP Deli branch.

Jim Shoe is listed only on a temporary menu sheet.

A thoroughly average Shoe, sliced style.
Commercial Sub, 8904 S Commercial Av
Yet another South Side sub shop that many probably wouldn't give a thought to entering.

This fine old hand-painted menu might be from the early days of the Jim Shoe. Note the distinctive (and correct!) use of an apostrophe after "corn."

Commercial (or is it Commercial's?) is somewhat unusual in offering seating.

One of the better sliced-style Shoes on much better than usual bread. A pleasant surprise.
Gyros 47, 350 E 47th St
One of the newer spots in town, Gyros 47 is directly across the street from Bronzeville's old shop, Maggie's. The window signs read "Jim Shoe" . . .

. . . but inside it says "Shoo."

A standard chopped-and-griddled ("
kat-a-kat style") Shoe.
Howard Philly & Grill (closed; see Sizzler's), 1636 W Howard St
This was probably the northernmost one in Chicago . . .

…but they called it a Shoo.
J&B Gyros, 733 W 79th St
One of several J&B Gyros, this one is in the Auburn Gresham neighborhood.

The classic Jim Shoe menu presentation.

An average Shoe, somewhat unusual for the hot peppers added without being requested.
J&B Gyros, 1206 W 51st St
J&B's newest store, opened in 2012. Inclusion of the Jim Shoe on permanent exterior signage is highly unusual (tip o' the hat to eagle-eyed PIGMON for this sighting).
Jeffery Submarine, 2020 E 71st St
Classic sign advertising the three components. Looking at these old signs, the Jim Shoe seems almost inevitable.

Jim Shoe gets its own heading on Jeffery's menu.

Pretty good gyros and ripe tomato wedges put this one well above average.
King's Gyros, 7904 S Vincennes Av
Kings is a large shop . . .

. . . with a large menu. It's spelled Shoo on the menu card . . .

. . . but the more common spelling is found on the main menu.

A pretty good chopped version that includes giardiniera.
Maggie's Gyros, 349 E 47th St
Maggie's advertises the Jim Shoe in the front window . . .

.. . . and on signs in the shop.

A generously portioned Shoe marred by large tough chunks of corned beef.
Maggie's Gyros, 5458 S Halsted St
Maggie's opened another store in 2012.

As tatterdemalion pointed out, these specials seem disturbingly targeted at the single diner as they come with only 1 can pop. Jim Sh? Was the sign maker trying to decide between "oe" and "oo"?
New Baba's Famous Philly Steak & Lemonade (closed), 7900 S Lafayette Av
This Baba's offered the unusual opportunity to buy a Jim Shoe at a gas station.

No Shoes on the regular menu, only on the specials sheet.

Shaved meats with gyro sauce and mustard, mild sauce on the fries. Below average.
Sammy's Grill & Restaurant, 6359 S King Dr
Sammy's is a shiny new shop offering all the standards.

All ingredients were thoroughly chopped and mixed, almost to a paste.
Sizzlers, 1632 W Howard St
This is the old Howard Philly & Grill, under new management.

Exactly the same menu as before.

Tastes as good as it looks.
Snapper Fish & Steak (closed; see Champ's), 1951 W Garfield Blvd
They advertise their "Gym Shoe" on a large outdoor sign.

As usual, no mention of the Shoe on the old-fashioned menu board inside.

An unusual (and very good) Shoe: sliced meats were griddled but not chopped.
Southtown Sub, 240 E 35th St
Southtown is a clean, friendly shop in Bronzeville.

Yet another newly-added sign advertising the Jim Shoe. Pickles and onions are somewhat unusual additions.

An exemplary Shoe, made with care.
Stony Sub, 8440 S Stony Island Av
Stony Sub never closes but Whips & Hips never opens.

There's some classic southside food art on Stony's south wall, including this demonic catfish.

Even the regular is huge (that's half of one).

Lots of giardiniera and very juicy. One of the best.
Sun Submarine, 5542 W North Av
A newer place with eye-catching sign and awning.

Interior seems almost posh compared to other sub shops. Note Gym Shoe spelling.

A nice sandwich with toasted roll, nicely crisped meats and a judicious amount of giardiniera.
Sunny Sub, 380 E 71st St
The Jim Shoe is only advertised on the new menu card, not on the tired old board above.

Really an awful sandwich; nothing tasted fresh.
Super Fast Food, 2247 E 71st St
A somewhat nondescript South Shore spot with a bit of nice gyros art.

Inside, the Jim Shoe is featured on an unusually fine hand painted wall menu. Note the repeated use of the apostrophe in corn' beef. I have a feeling this was done by the same sign painter who did Commercial's menu.

One of the better sliced-meat Shoes I've had.
Super Sub, 3943 W Roosevelt Rd
Yet another yellow sub shop.

As I recall, there was no mention of the Jim Shoe on their extensive menus but they were happy to make one without needing any explanation.

Kind of a gnarly looking Shoe, but not a bad one.
Super Sub & Gyro, 2810 W Marquette Rd
Almost across from the Darius & Girenas monument in Marquette Park (see it!) was this striking yellow building. It has since been painted tan, perhaps to stand out from the crowd.

They have standard Jim Shoes of course . . .

. . . among the best in town . . .

. . . but another reason to come here is their innovative Super Jim Shoe Taco. One of the more amusing variants—a hybrid of two southside classics, the Super Taco and the Jim Shoe. One wonders what further innovations the future might hold.