I have had 2 PPK/S's & 1 PPK (all US guns) in .380
I have had 2 PPK/S’s in .22 - both Manurhin guns,
I have shot extensively a Manurhin PPK/S in .380
I currently have 1 German PP in .22, 1 TPH (US) in .22 [one of the rare reliable ones- one that I was fortunate enough to get a set of spare parts for when they were available] as well as a new P22.
I gave up on the PP design in .380. Even if it is well built, any blowback .380 is a hard kicking gun. (I had a Beretta 84F also, ditto.) Lest you think I’m a recoil wimp, I shoot a 40S&W in IDPA, (SSP Expert) hunt with a 10mm Mag. 5” 610, & do not find my 629 Mountain Gun that unpleasant to shoot with full house loads.
The PPK while accurate with it’s fixed barrel also bites the hand that feeds it- the slide is low and often takes a slice off of the web of the shooters hand- the meatier the hand, the more it is likely to bite. I have also seen spotty reliability, & magazine seating issues. The safety is counterintuitive and slow, and it does not have a drop safety. It is not safe to carry as such unless the cumbersome safety engaged.
In .32 they may be more controllable, but given the size & weight, they are not efficient and still suffer from all the other drawbacks. My P32 (Keltec) is reliable, light, small, & reasonably accurate, even after collecting dust in my pocket (without printing/pulling) for a month.
In .380 the Colt Mustang Pocketlite is my choice- smaller, lighter, more reliable, more customizable than the PP series, it functions with a wider variety of loads and is easier to shoot well and fast than the PP guns. However: one must be comfortable with the 1911 manual of arms as well as cocked & locked for CCW.
In .22 they are a blast. Nothing for kick, can get your Bond ya-yas out with cheap ammo, still accurate, good single action, a fast shooter & don’t have to worry about ‘stake your life on it’ reliability. It is a pricey plinker.
The PP series is a classic, unfortunately it is also markedly out of date.
My boys (9&12) MUCH prefer to shoot the TPH, but they haven’t seen the P22 yet (which Earl’s has short barrels for NOW- I just ordered mine!)