Not if his reaction time isn't as good. Every time you introduce an additional mechanical device into the equation, the potential for additional minute but significant delays in the cognitive sequence of oh shoot gotta stop! increases. Someone good with brakeless will fare just as well as someone with brakes in an emergency stop situation. The important thing is having internalized how to stop suddenly if need be, whether you have hand brakes or not. If you are mentally unprepared, you're screwed with or without. If you are specifically prepared, you're OK, again with or without.