Re the Walther. I shot one at the range that the owner had and I found the rigger to be a pain on his model both the DA and the SA. You must just have gotten a good one regarding teh SA trigger. I really do like the S&W semi .22lr. My favorite is still teh Browning however.
LOL.........agree Harpseal. I can "manage" the SA trigger is what I should have said. My best .22 pistols are Model 70/71 Berettas . One was a gift from a jooooohish buddy and his wife Salome. The other I bought in Italy when I was stationed there. Those are extreamly accurate, compact and 101% reliable. One has adjustable sights and the other has fixed. Very well made .22 pistols.
The Walther P22 and it's bigger brothers looks like it would be a very good training rig. Same bells and whistles on .22 and 9MM versions per se. Thus train cheaper and work up to confidence for new shooters. I may get the 9MM flavor for just that reason alone.
I have been using the advantage arms .22 slide conversion on my Glock 19 and the 317 snub and 340 snub from S&W for just that reason.
Stay Safe !