The problem with your floating discs Luke (for they are now in my posession on the 350) is they rattle and clatter over bumps...even wheeling the bike around has them chattering!
It does make them a point of conversation though and they do work well.
(not to mention the rear caliper also rattles over bumps...the fairing vibes at low revs..the tank resonates....thankfully i doesn't have an airbox, otherwise it'd sound terrible)