I also use and love the SUC (II, in my case). I think I've been limiting myself though, using it only for peeks. Obviously, nw'ing and double w'ing are naturals.

Another recommendation: Bob Cassidy's peek wallet, which is a modified but otherwise ordinary nylon hip-pocket wallet that closes with Velcro -- a very standard, recognizable, everyday item. You can use it as your regular wallet if you like. It is "available" on Bob C's website ("available" is in quotes because delivery time varies wildly).

Cheers,
Jerry