Any of you guys that were a Professional Photographer "Back Then" how often did you see a guy with a Canon F-1 or Nikon F2/F3 using one of those giant battery attachments.?
You would think that they almost made the camera "unusable".
I realize there would have been times when it was important to have that ability, but.......

The fastest motor i eve used were those Smell/Thin units that just added an inch or so to the bottom of the body. They basically saved you from making the motion of winding the film and allowed you to keep looking through the viewfinder and not having to move the camera to advance the film.