oh man, that is a toughie. both will do well for cc or a truck gun. i am a CZ kinda guy so i am going more for comfort, and the Kahr delivered that to me. it also felt sturdy, one solid piece of frame. whereas the P11 was thinner and smaller, but felt sort of cheap. plus side... you can get it (mostly) in whatever color combination you wish... if you are in to that sort of thing.
my $0.02 on the topic