Yes, I do that test pull on the right before I get started, but I still haven't figured out how to safely do this on the left, as I am alternately, going up/down the hill on my driveway and trying to clip in. I am going to do some testing today, in the driveway, with the left foot as I am standing still.
Yes, these pedals have a bad rep with mountain bikers, as they clog up with mud. So, I understand why a shop doesn't carry them.