I just tried one recently, a friend showed up and took it out to rack with. Looked like it was an older version, clear instead of black and diamond shaped just for 9 ball.
I enjoyed it quite a bit, racks seemed more consistent and it was quick to rack, also seemed to take care of the typical issue with balls rolling off near the spot because of worn indentations over time.
I just ordered a set of them - don't play much 8-ball, but for the price figured I'd just like to have them both just in case. Since I have an old Flowers case with 2 mid-size pockets and not much room, will use the suggestion here and roll up the 9/10 ball rack around one of my cues and should make for easy storage.
Thanks!
Scott