chanroc,
Unfortunately pocket guns are compromises.....to conceal in a pocket they need to be small and light etc. As for comfort while shooting, small guns are a compromise, LOL. Im not trying to be a smartazz thats just the nature of the pocket gun.
The grips Smith & Wesson put on those guns are actually not bad providing you don't shoot them a lot. I dislike pocket carry so I carry J-Frames IWB. You may try Uncle Mikes combat grips, three finger hold but three finger grips are harder to hide plus you have to find them NOS as they quit making them a while back.
Sile grips make copies available from CDNN, Smith & Wesson sells grips as well. The Internet is your friend when looking for grips, holsters, etc.