I have fallen once since going clipless in December. We were out on a ride and it started sprinkling. I was going really slow and made a turn on a really slick surface. The bike was out from under me before I knew it. It happened so fast riding clipless had no effect on the fall and my feet released during the fall. Big bruise, 2 broken spokes and 1 damaged ego (an 80 + year old man came over to see if I needed help).