How is this typically served and enjoyed by those who love it?
For me? Fried, after slicing from edge to almost center 3-4 times in each piece to prevent buckling. Then added to eggs and white american cheese on a kaiser roll. But, I'll happily put it on a buttered and toasted english muffin adorned only with cheese.
For the kaiser? You're out of luck. As far as I can tell, nobody in the midwest makes a product comparable to those found on the east coast. n.b. there might be "higher quality" kaiser rolls available, but nothing that mates as well with the breakfast sandwich as those in NY, NJ and Philly.
I prefer it to bacon in this format. But, I think I actually prefer scrapple to pork roll for such a sandwich. Sausage for me, on the east coast, is a non-starter for reasons I've never quite understood. Here? Different story.