I went with dad to pick up his ppk/s (stainless) last year and was less than impressed when we brought it back and shot it in my indoor range.
The gun is a good looking piece but has so many sharp edges that it feels like you're holding an ice skate blade at times. We used some 1000 grit wet/dry paper to take off some of the sharp edges and it felt a lot better, especially when drawing the gun from a holster. The serrations on the slide can be rough and can be even worse when you're practicing clearing jams. We used some 1000 grit wet/dry paper to take off some of the sharp edges and it felt a lot better.
The other thing I didn't like was the decocker. The decocker on my sigs actually capture the hammer and allow you to drop it slowly, but the walther safety/decocker drops the hammer hard as if the trigger had been pulled. Doesn't give you a comfortable feeling, especially when you find out that there is a recall due to the guns firing when the safety/decocker is engaged. My WWII p38 operates the same way and it bothers me too.
We went through about 400 rounds and we had no ftf, but had about 1 fte every other magazine. When we received the gun back after the recall, it was better, but we still had a few fte. Still can't get comfortable applying the safety and I tend to use my thumb to allow the hammer to drop slowly.