Anyone using bullhorns with cantilever brakes? I've heard the brake levers on drops work better, but I sort of have my heart set on bullhorns. Does it make much of a difference?

I don't understand how it could make a difference. I love my bullhorns. Drops don't feel natural to how I ride.

Is this a lever compatibility question? I don't get it either.

Most all levers, including cross levers will pull standard cantis. Are you looking to mount your lever(s) near the stem?

i'm pretty confused, also. if this is a brake lever/caliper compatibility issue, you will likely get more adjustment and reach options from an aero (road) lever or a mountain lever designed for cantis than you would from a bar-end style TT lever.