I've got a PM9 with about 300 rounds through it. It's really easy to carry, but at this point I just don't seem to have the "knack" down and so I carry my P-3AT or USPc most of the time instead. Truth be told, the Charter Undercover seems to almost fit the same niche, and I'm not sure what I'm going to do at this point. I'd love to be able to just use the Kahr, but I can't seem to get it any more accurate than the P-3AT.
Edited: esq_stu unintentionally brings up an important point: it doesn't always chamber a FMJ round well as the first one, so I either carry Pow'r'Ball or Gold Dot with a Pow'R'Ball on top. It chambers fine while shooting, just not initially. I also use either an Uncle Mike's IWB or a Bianchi (officially for some kind of Glock, but the slide is pretty similar) OWB. I carry the flush mag while holstered but the extended mag is much easier to aim.