I have a Campagnolo 10-speed cassette on the way, and I just want to know if I'll need a new cassette lockring tool to install it. I already have the tool for Shimano/Sram cassettes. In the pictures I looked at, the splines on the lockring look similar, but not quite the same:
-- EDIT --
This is the tool I have. And this is the tool I'm supposed to have. The splines may have fit, except the diameter is off by 0.6 mm, which sounds like just enough to make it incompatible. So I guess the answer's no. Damn Campagnolo, always making things harder...