I can attest to the fact that the reverse often happens. A lot of the friends I left behind in ny bring Pepe's back to ny with them when they're in Connecticut, even if they have to stop at the easy-on, easy-off branch in Fairfield. If someone in the office is in Connecticut and doesn't bring back Pepe's, they're in the doghouse. Passing through at 6 am is not an excuse. They are supposed to wait.
A lot of it is just a preference with crust thickness. I've always been partial to Chicago style, but get sneered at in the Northeast for saying that. I was also in St. Louis this summer and they have their own style which was hideous. It was like they tried to see if they could make something really awful in the shape of a pizza, call it pizza, and see if people would still buy it.