Until someone dangles a burrito under his nose... then he'll drop the belts or at best strain to hold them all in one hand....
I know. But I wouldn't be the least bit surprised if they find a way around it. I'm not saying that it will happen (I hope not), only that it wouldn't surprise me.
Not many guys can take it away from him in a fairly judged fight. The only guy with the combo of skills and size is Fury, but he is a light puncher.