Played a decent amount of bughouse but only started with crazyhouse a month or less ago. Although on the surface very similar games, I would say they are fundamentally different because there is no partner and so crazyhouse is "deterministic." I think that bughouse must be more popular if only because all that is required to play are two boards and two standard sets whereas crazyhouse is much better suited to online (I guess you could have bicolored pieces to play live.) So is crazyhouse catching on at all? Has anyone seen a set that would allow playing live? (I note there is not yet a tag for crazyhouse.)
Very boring answer: when I was at the university, we used to play it on a real board with two sets of pieces. Whenever you take a piece, you exchange it with one of the correct color.