There's a lot of room between Ricky Williams (who, incidentally, is also asked to play as a "pound the ball between the tackles" style) and a Hearst/Barlow combo.
The greatest backs usually play the game start to finish with appropriate breathers and there are plenty of examples. That's what I would want for either DD or Hollings.
If you agree, then we're on the same page. But it's true that if I were to err on one side or the other, I would err on the Ricky Williams extreme.