Different, but not entirely different, when a group of my co-workers went to
Zocalo for lunch, two people ordered sandwiches and the rest of us shared an array of small plates.
The flow was definitely awkward, mostly because the non-small-plates folks waited an extremely long time before they were served any food. We shared, but they were modest, since they had chosen a different route.
In retrospect, the timing was probably aggravated by some unknown factors in the kitchen -- it was a really long time, and the place was empty.
Maybe with family it would be different, but to G Wiv's point that many restaurants don't permit it, I think it's because its awkward for them too.
Joe G.
"Whatever may be wrong with the world, at least it has some good things to eat." -- Cowboy Jack Clement