I've tried it on a bunch of rides, and I think as long as its a professional quality cymbal, its quite possible and rather easy.
All you gotta do is put the tip of the stick pretty much perpendicular to the cymbal face and put a surprisingly LIGHT amount of pressure on the cymbal while you slowly move your stick ALONG THE CIRCULAR GROOVES of the cymbal. If you move your stick up and down the cymbal, it won't work. It has to be pretty much along the circular grooves, but it doesn't have to be exact.
It's a cool effect with a large amount of applications in the right style of music. Tell me if you get it, i can be bad at explaining things