I would say he was physical like a lot of d men in a puck retrieval mode. He could bounce people in the corners and win battles, sort of like Bourque, but didn't look for big hits. As posted, he usually had the puck, and the opposition's rush was often directed to his partner's side [usually Dallas Smith]. He wasn't wired mean like Potvin for example, or Jovo, but he had a temper, and could lose it when angered.
Montreal played him like they played Ray Bourque, they put the puck in his corner and forced him to beat 2 men or pass off. They had limited success with this tactic, as after all, they were trying to limit Bobby Orr, and they had a more mobile defense than most if he did beat 2 fore checkers. Highlight films don't really show all he could do as he would make plays that others wouldn't imagine, he would see possibilities on the ice that wouldn't occur to 99% of players. He was like Gretzky in this way. As much of a Hab fan as I am, and as much as I can bug B's fans about playoff results, if Orr had been healthy, the 70's might tell a different story.