Beautiful K-22 - congratulations! A 27-2 was my "gateway drug" into S&W P&R revolvers but my all-around favorite is the K-22. Careful- they are addicting as you have already been warned! I have an older brother to yours from 1946 that I rescued from a pawn shop for a song. It's cosmetically challenged but a fantastic shooter.
I have the diamond magnas that serial to the gun (they look pretty rough too) but found the Herrett's Shooting Star K frame grips in a bin of used grips at a LGS and refinished them. I have $5 invested in these and find they are very comfortable for shooting.
My other K-22 is a four-liner from around 1956 (if I remember correctly). This one is on the opposite end of the condition scale and very mint. These target stocks are supremely comfortable and while they are not "correct" for your one-liner they would look and feel great nonetheless.
The Pachmayr grips are a form follows function decision but if you can find a nice set of wood stocks you might get the best of both. If any LGS in your area have bins of old grips it can be worth the trouble to rummage around in them and see what you can find. You never know what bargains might be lying there.
Wave