I don't own an LC9, but a friend just got one. I was out at his place this weekend, and tried it out. Better handling & sights then the LCP, but just a little big, to me, for undetected pants pocket carry, especially with jeans. Better suited to a coat pocket, or an IWB holster. It was easier to hit with then the LCP, and the subjective recoil and controllability with ball ammo was not bad.
Lots of guys carry bigger in their pockets, but are easily spotted if you know what you are looking for. When I am carrying concealed, I don't want anyone to know its there but me.
Larry