Perhaps it shouldn't be, but when the cafe is in CenPho (where there's plenty of stylish competition, and people take their hangouts very seriously) and the java joint happens to be owned by Matt and Erenia Pool (creators of two other popular downtown haunts, Matt's Big Breakfast and The Roosevelt), then the answer is affirmative.
Yelpers flipped out when the Pools' third venture, Giant Coffee, debuted last year with a cash-only payment policy. Matt Pool reasoned that he was emulating the famed Portland coffee roaster Stumptown.
But recently, Giant began taking debit and credit cards.
I've never seen a coffee shop or restaurant in Phoenix take payment via iPad, but at Giant, they have a tiny device hooked up to it that allows customers to use plastic -- and get a digital receipt. Lookie here: