Sir Knight - now that you have purchased the new Walther PPS, go get yourself a case of 380 ammo and break that baby in right. She will probably be pretty stiff for about the first 500 rounds or so but should settle right into a smooth operation after that.
I have had the Walther pistol in just about every configuration they have made. I have and have had P-38s as well as a handful of the PPKs, PPKSs and PPs - all in 380. The PPKs and PPKSs were new, the PP was used (2 boxes of ammo). Had to shoot the stuffing out of each of them before I was happy with them but then, oh boy were they nice to have with me.
The newer ones have been redesigned by S&W to eliminate some of the hammer bite and a few of the sharp edges and I think they look great. A recent Gun Tests article still showed them to be stiff when new, which is so like a Walther, but they are great.
I found the best way to break them in, at least for me, was to go DA/SA for two shots until the magazine was empty and the action had smoothed up. Oh yeah, get a whole bunch of extra magazines, they run empty pretty quick when you're havin' fun. HTH. Mikey.