Its still all relative. It depends on need.
Persoanlly, I wouldn't do more than one or two reverses in set, And only if it was called for in the flow of things.
Its still drawing and releasing the arm. When mounting and pounding, most times its the elbows back version. When first approaching its the elbows down version. People get too hung up on trivialities. It worked for him at the moment and to a formidable opponent.
Matt,
I haven't "rolled" anything for years.