I've said this before, I grew up riding motorcycles, so it just feels more natural to keep all the controls the same as on a MC.
i agree, ive never taken a real motorcycle for a ride, but the conventional controls seem like the best way to do it, after all, people have been building motorbikes for over a hundred years and most settled on the "clutch lever on the left, throttle and brake lever on the right" scheme, so its probably the best way to do it.