I don’t know any personally, but we have a lot of them in Portland. A ton of them used to frequent a pool hall I went to and were extremely open about their culture and would willingly answer questions that anyone had. They definitely have their own kind of lifestyle, that’s for sure. And by that I mean they knowingly and willingly break certain laws, if their culture sees something differently.
I should also add that compared to most people, they’re weirdly friendly for the most part. And they generally tend to bargain with everyone, for practically everything. Even things that can’t actually be bargained for. Heh. :)