what like u mean his defence , like the shell style rolling the shoulder and leaning away from the punches?
its a pretty slick style near impossible to master!! and he does rock at it... and i think there are downsides to it tho.... one- when your too close and you wants to separate them you tend to have the reaction of kinda puting your elbow out and pushing them away... a few people keep telling me he throws elbows so i have to explain to them....
and also at the higher wieghts hes got caught by some of the fighters with more awkward styles...
but it is a really great thing when your good like floyd is.. it appears that his chin is unprotected and when they shoot you roll the shoulder and lean away etc and come back with a right hand counter
its really great to watch floyd - phillip ndou when ndou is flurrying with all he has while floyd is against the ropes making him mist every single shot and the crowd is going wild thinking floyd is getting over powered or something... but not one of about 20 punches landed...
peace