I don't think it's either. The reason I asked was that after my hammerfest yesterday I was whining about how I thought I was developing the IleoTibial Syndrome on the right. I've had it on my left from running and am not anxious to get it again. Anyway, a hammerhead told me he swore by it, but no one else gave an opinion one way or the other. I thought it was just an overpriced broomstick but apparently their construction is a bit more sophisticated.
Just hoping someone had an informed opinion about it. Maybe I'll check with the Turks.