Simple question: Would you trust your life with a .380?
I'm not interested in: if you can carry a bigger gun, then carry one. I just want to know if you, personally, would feel safe carrying a .380 only.
Some thoughts:
1. A .380 pistol will probably solve most private citizens' close-range defensive problems.
2. A .380 is enough, until it isn't, but the same could be said be said of any cartridge.
3. A .380 pistol, of known reliability, is better than a service-cartridge pistol of unknown reliability, and certainly better than a service-type pistol known to choke.
4. .380 ACP happens to be the minimum cartridge I allowed to tote for defensive purposes, per PD policy.
5. I know that a .380 bullet can actually catastrophically fracture a femur, based upon a real incident in my patrol area. Anything that can cause that much damage is a serious cartridge, even if that one incident is not typical.
So the answer to the original question is a qualified "yes." If/When my PPK/s has successfully completed its break-in/function-testing, I will probably carry it some of the time. I will, also, probably add a G42, at some point in time.
My usual minimum concealed-carry defensive pistol. at this point in time, is a G19, but as I am about to retire from LEO-ing, deeper concealment will become more desirable. The Walther PPS M2 has my attention, but I just may decide .380 is enough, in a PPK/s, when a wide-body G19 seems a bit too thick to dress-around, and/or a 1911 seems too heavy. (It is the outer rear corner of the blocky Glock slide that prints the most, at least on my mostly-skinny self; I find it easier to dress around a full-sized 1911 than a G19.)