I have two Seecamps. I have the LWS32 and the LWS380. Both are the pinnacle of achievement as far as mouse guns go. If you are wanting a gun that can slip into a wallet holster and go into your back pocket with no more effort than carrying a regular wallet but is still a finely crafted weapon of unsurpassed quality then Seecamp is the only option.
I wrote a review on the LWS380 not too long ago. The LWS32 is easier to shoot and control than the LWS380 but it will give you an idea.
http://www.thefiringline.com/forums/...t=range+report
As far as size goes here are some pics that will give you a good idea.
Seecamp and Rohrbaugh R9
Seecamp and PPK
Seecamp and NAA Mini
Seecamp and S&W 637