I love LEM and have several. I explain it to people almost like a two stage trigger on a rifle. There is take up and than a break. Once you figure out the sweet spot for the reset, LEM can be shot very quickly.
It wont get you Gary Mucilek like splits, but for CCW it is great...perfect in my mind and I carry a P2Ksk in Light LEM IWB at 5 oclock position.