Has anyone tried planting "steppables"? I've seen them on line in great variety of ground covers that do well with foot traffic. Couple of weeks ago I noticed my local garden stores start getting some. I got just a couple to try, one is creeping thyme and some kind of sedums. I'm thinking of planting some soft ground covers in my tort garden and I'm just curious if they are REALLY STEPPABLES or is it false advertisement.