I saw pj kavaya the last time he was in the states and I don't recall him on the R1s. Maybe in Europe he's on them...?
Anyway, I've definitely seen a few pairs in the southwestern tourneys, but not anywhere near as many as kryptoniums. I have a teammate on R1s and he likes them, but last week he cut hard and a huge chunk of the upper plastic piece cracked off. He was able to post the rest of the game and they're under warrantee still, but it's not fun to see, and who knows if that could have broken in a different spot and taken him down hard. I recall that with sprungs Kieth says to make sure to hydrate the plastic so that it stays strong. I wonder if the same might apply for R1s. We're on the desert in Phoenix AZ, so I try to take care of the sprungs. Not sure about the Marsblade plastic polymer, maybe it dries out and becomes more brittle