I used two of the translucent-topped ones with some Happ Supers on a panel I built my brother. They look fricking great! The red and blue are a very good match for the translucent buttons from FXbuttons/Happ/Ponyboy/Divemaster, or the old Wico translucent leaf buttons. And the shafts have a very bright and smooth finish that beats any I've ever seen on a regular arcade-issue stick by miles. They definately dress up the panel.
The only thing is, they are a little tall for my taste; not only do they look taller than I think they ought, but, at least on a Super, the throw on the stick seems very long indeed with these. I'm waiting to see what my brother thinks, but if they were mine, I'd break out the Dremel tool and cut new e-clip grooves to lower them. Which isn't a big deal, it ought to be easy if he decides to do it. It's just that once you cut the new grooves, you are pretty much stuck with the shorter handle, unless you want your homemade grooves to show above the panel after you raise them back up.