Is BM viable for raiding?

I always loved BM but switched to MM because MM was simply stronger in 4.2 (stronger for me too). I don't like survival because it is essentially brainless, but buffs to BM give me an opportunity (excuse) to whip out my spirit bear. My question is simple: Is BM a bona fide raiding spec or simply a way to gimp your raid?
It is viable. Perhaps not the very best of all time but it's not bad.