No. There are only a few reasons why I don't Butchers Block as OT, and they're because the MT is in Deliverance/NoGrit/Sword Oath and is DPSing and their DPS outweighs the 50~80 DPS I gain from using my BB combo (almost 3K BB Crits bro). Also if the MT specifically asks me not to butchers block in my opener I'll just double Storms Eye. If I'm ripping aggro it's because one of us is not paying attention to the threat meters, and it's usually always the MT. The MT should be doing everything they can to keep that from happening. Warrior MTs NEVER have problems with losing aggro if they do their opener right. Heck, they can even be in deliverance and never lose aggro to a BBing OT if played right.
If the MT just NEEDS to pull in Deliverance/NoGrit/SwordOath then bring a long a Ninja. Aggro should never be a problem and if it is the MT sucks and needs to "git gud" or get better gear.