I rode yesterday with them. My right foot felt like it was slipping sometimes...don't know what would cause that sensation. My left knee hurt afterwards (front). I've raised my seat up a bit to compensate for the thickness of the cleats...maybe that will fix the knee issue. I was pleased with how easy it was to get unclipped. But getting my second foot clipped in when starting back up after stopping is going to take some getting used to. My other pedals were two-sided.
As we must account for every idle word, so must we account for every idle silence." ~Benjamin Franklin