I look upon .32 as I do .25, usable on mice. I really don't like to carry the .380, but if I need maximum concealment, it's my bottom level cartridge. I shoot a 90 grain Hornady XTP JHP out of mine at about 200 ft lbs, pretty accurate and 100 percent reliable. I want expansion and the XTP will penetrate enough. It's gonna take more'n one round at this level, I'm afraid, no matter what. I haven't got a P3AT YET, though. I am thinking I will pick one up. You can hide that thing no matter what you decide to wear. I doubt I'd carry it much, prefer my .38 snub or my 9mm Kel Tec P11, but there are times when those guns just won't do, just a tad too big. A P3AT would be a good back up, too. I just have absolutely no confidence in the .32 cartridge, a little more with the .380. There is a place in the wardrobe for this size of pocket gun, though, even if the calibers are marginal. The P3AT is just as concealable as the little .32, so why would I go for the weaker cartridge? There isn't a point. The P3AT from what I've read is a good, reliable, almost accurate gun. I don't think there's a big difference in reliability and I'd give the edge to the rimless .380 ACP at any rate, no possibility of "rim lock".