There's a significant problem with the theories behind this post. You have to engage the clutch to break hard or you're going to stall the bike. In fact, many times, acceleration will get you out of as many problems as breaking. Horn is more important to me anyways - they should all be WAY louder.

A better option is an auto-canceling turn signal which I'm sure too expensive, for now. Until then, for either design, the suck is going to depend on finger/thumb size.