Hi! I recently put frogs on my mountain bike. I had Shimano SPDs before and had some trouble this winter with them getting clogged up with snow and frozen mud. So I decided to try the Frogs. I find that they are very easy to clip out, but I have not quite gotten used to the feel of them clipping in.They don't have that same unmistakable "ker-chunk" that the SPDs do. There have been some times when I've had trouble getting started up a hill or thought that I was in and came unclipped while climbing over rough stuff.
If you have been using them on your road bike, though, I would imagine you are more familiar with how they feel. I'm still not sure if they are right for me. I do like how quick they are to release when I want to get out quick...I still end up falling over, though
Linda