Cool. I just ordered them from Sportaid. I'm hoping going up and downhill will be easier and smoother. It just makes sense, but it's hard to imagine since I've only used the old school tubular style pushrims. This is as close to "reinventing the wheel" as you can get. I think going uphill, or any hard propulsion, will be more efficient/less effort/more bang for your buck per push. I just feel my wrist is so cocked with the pushrims I have now. Going uphill seems like I'm pushing about 100X more effort than is really needed. We'll give this new design a try. On paper, it looks so simple and commonsense. Nice to talk to someone who has been there and done that!