Yes the P6/225 is close in size to the 239. It's also lighter and much better balanced. Feels great in the hand. The grip is a little longer and the carbon steel slide is lighter than the stainless slide on the 239. If you can carry a 239 then you can carry a P6. Mags are over $40.00 bucks (and not getting cheaper) though so keep that in mind if you go that route.
220ST, P228, Two P6's