[Matt]

I just caught the down-the-line view of it. He did have a very vertical shaft at the top, but the clubface was wide open. Therefore he must be paddlewheeling (constant closing) to get it into impact position. He does, however, go to the End so he must be very, very careful not to begin the downstroke by dragging the club downplane.

His stroke has elements of both Hitting and Swinging. I'd lean towards Hitter, but there are definitely some mismatches that he must be doing a good job of compensating for.