Team 2053 TigerTronics had one at FLR. Our team (1640) tried it on the practice ramp, but we
didn't have the traction (pic) to push up over the bar and onto the platform.
They deployed it on the field but as far as I know they didn't have any takers.
It was a solid ramp with anti-slip tape, but the robot needed some momentum to get up and over. With 1" to spare on each side it would take some fine driving to make it work.
They are going to Cleveland, so they may get it to work then. We were pleased to get asked by them to practice on it.