can work well on a strong horse, can also be a tongue shredder!! other options available. tried a waterford? bit noseband combination? depends on what the issues are or if this is just a discussion?
I have found that it makes horses more light in the hand, except my horse, to whom it makes not a blind bit of difference!
He has never had a sore mouth whilst I've had him, but I'm sure this bit could do some damage in the wrong hands.