I shoot a Walther PP that was also a GI bringback. I have the holster with extra clip, and the pistol is in very nice shape.
The sights are rather small, but, on a good day, the pistol is capable of some surprising accuracy.
I find the 32 ACP somewhat of a pain to reload for, as the case is so darn small, but it isn't a finicky cartridge, IME. I buy lead RN's at the local gun shows, since bullets that small are pretty cheap.
Any fast powder that will function the action, like Red Dot, AA #2, etc, seems to shoot nicely.
I had the Walther, along with some other handguns at a local range one day, and was shooting next to a fellow with a 44 Magnum. When I moved the gallon milk jugs I was shooting at to the 100 yard range, and made a few hits (not many) with the 32, the poor guy nearly fainted.