Yes, a few. I'd read threads like this before I got a Leica, and I thought it was just Leica lore, but yes, it really does happen!
They've all been blokes, natch, but none of them have been Wetzlar snobs or asph snobs or anything. 🙂 Some just like pure manual gear (mine's an M4), some have them or had them, but I've found only people who knew what they were came up and talked.
It's realy quite pleasant, living in an anonymous city, to end up chatting to a complete stranger about what films they use, what photographers they like and so on.