Nah. It hardly hurts at all now and I've got quite a bit of callous build up on my thumbs. But honestly I can't ever see me going higher than 150kg on deads naturally so I doubt I can do much damage and frankly I'd rather duff up my thumbs than tear a bicep. If it really becomes an issue I'll switch back to double overhand.
If your only problem at present is a broken thumb use straps.
