I sometimes do this, but usually for humorous effect. Today I had a double-double burger from In-N-Out Burger and had a conversation that went like this: Me: In-N-Out makes good burgers, don't they? My friend D: Yeah, but burgers only. Me: Meaning? D: Their fries are lousy. Me: True, but one does not go to In-N-Out for their fries. Does anyone else use "one" in this way? It's correct, but is it too quaint? Too British? If a character I wrote talked like that, would he come across as some kind of pompous ass?