I haven't shot the LCP but I did have a Taurus TCP which is the same size. It is a bit smaller than the LC9 but I find I can pocket carry the LC9 in just about any pocket that isn't fitted. It wouldn't be right for everyone that way but it can be dropped IWB and you almost won't know it's there.
Mine has been reliable having shot about 350-400 rounds with no malfunctions. The recoil is easy to handle and the trigger is a bit long but it's smooth.
I'm not going to get rid of it but I'd have to say honestly that if I went back in time I'd probably have gotten a M&P Shield instead.