I have carried Kel Tec P11 and PF9's on occasion. They are great little guns, but have very looong and heavy triggers - that's their only safety mechanism. I carry my PF9 with a Crimson Trace Laserguard and an extra mag:
I prefer carrying one of my 1911's usually the Colt Commander or DW CBOB, but there are times when I need a bit more concealment.
Lane