I have never done this. The closest I cam was a drabble for a 00q challenge that I set in a cafe, but it’s not AU…it’s just Bond and q having a discussion (it isn’t going well) in a cafe.
Actually, other than the inherent unreality of smashing Zach’s and Chris’ faces together, I’ve never written any AU. Everything is canonish. And I honestly don’t read many (though @suedescripture‘s Blind Dating and Princesses are notable exceptions, as well as that naked yoga one on LJ).
If I were to do a coffee shop AU with Pinto, I’d probably set it at a college. Zach is the new, young, hot Drama professor who frequents a cafe near campus every night to work on grading and setting classwork for the next day. Chris is a broke English Major who reads constantly between making espressos and can be completely disinterested in taking orders if he has an essay due. But he’s very charming nonetheless. And when Zach decides to have his students perform an adaptation of Chris’ favorite book, well, a few consults wouldn’t go amiss, would they?