Hmm, not sure if you saw the thread, or didn't, or it didn't cover you question, but around 2 weeks ago, if my memory is correct, there was a 2-3 page thread on this topic.

From what I know...they are better than just a platform pedal, better than the MKS half-clips (those got beat up on yesterday in a thread) but not as good as full clips and straps, nor double straps. They do a nice job and allow you to wear just about any type of shoe.