I'm also a happy owner of a WPC. I'll echo the comments of Andrew K -- the tripod socket is pretty flimsy.

I've lately been putting 35mm film in it via the whole packing-foam-shim hack. You've got to unload it in the dark, keep the film window covered with black tape (no backing paper as with 120 film), and guess how far to advance the film after the shot. Still, I've gotten some fun sprocket shots.

sprocket forward by b.pointr, on Flickr

Some of my shots with the WPC on flickr, and a group that's focused on the camera.