I shot a 365, and loved it. It would be great for a typical carry gun in a regular belt holster with regular clothes. The thing I was seeking here was minimal weight and size for carry in summer shorts. I've heard great things about the PM9, but never shot one. I've held a PM40, and it was pretty nice, but that was a long time ago. I wish I could compare a 365 next to a PM9 some time. The other direction I am looking is for a small revolver.
That detachable barrel gun is a hoot. I'd like to get one of those just for the novelty of it. Probably illegal in Massachusetts.
In terms of shooting there’s no contest between a 365 vs PM9…. 365 is going to come away the winner the only thing the kahr is going to win on is size. The p365 is a more shootable, better handling, less awkward gun.