99% of the time I'll have my Keltec P380 in my front left pocket year round. Sometimes I also carry my Springfield XD40.
The Keltec was the breakthrough composite pocket rocket when it came out. I first carried the .320 model but, gosh, that's a small round. I own the Thunder in two versions but both in .380. It's just big and heavy which makes if better for shots out to, say, 50' but uncomfortable for me to carry, anyway.
I grew up always wanting the PPK but discovered that it was hard to shoot without having the slide cut the meat in my hand. If I took my time I was fine but in a "hurry-up" situation I just couldn't rely on my grab to protect my skin. I also had a Sig which was in stainless. Beautiful gun and precision made but much too heavy to be comfortable.
Nobody is going to argue with anyone else about these micro semi-autos being very uncomfortable to shoot. They are. Even with smaller hands they're difficult to control. I do practice with it regularly and do an exercise with the target no more than 15' away, usually a bit closer. I practice a deliberate draw and shoot; no speed involved, just clean and precise draw and shoot all in a single motion. The idea is completely surprise to the perp. And "aiming" is instinctive. No time to align sights even as poor as they are. My exercise is to put one round precisely where my hand points the pistol. The second, "followup" round is difficult but manageable. I rely on that first shot to do the job of shocking/disabling a bad guy if only they are close enough. IF they are 50' away, good luck. I also do, however, have the laser on mine. Why? As a mental deterrent. The laser is easy to point and might, just might, give a bad guy a second thought with it on his chest or forehead. He doesn't know that the chances of a round following it would be difficult. I do practice that too, however.
I'd rather have a .380 than nothing at all for sure. And, knock down power, followup shots, distance shots, etc. are fine but chances are you'll be almost able to throw the pistol at the perp as well as shoot him so close up. I'm thinking of the 9mm Keltec but haven't taken the time to research it up to now. It's hardly much more powerful than the .380 but might be better to control.