sure is purdyI really like my Glock 26. I have no problem conceal carrying it both OWB and in a pocket holster (yes I do have some pants and shorts with that big of pockets ), but to be honest with you my main conceal carry gun is my Kimber Tactical Ultra II. Carry mainly in a Milt Sparks #1 Heritage IWB holster. Its a .45, but if you want a 9mm Kimber also has models in the caliber.
And because I like showing it off here is a pic
My apologies to those who are getting tired of seeing it.
as for the OP's question, the only Walthers i've had any experience with at all are the P38 (WW2 9mm) and P22. fine shooters, but pain in the rear to break down and put back together, especially put back together. makes cleaning a real chore.
If you want a 9mm, you might also want to look into a Sig 239. The slide is considerably wider, but the grips are slim with a single stack mag, and they're fairly easy to conceal.