I'm not super familiar with Gary's Strat era. Does he ride the middle pickup a lot? Now that I think about it, most of what I know of him is from a later-era live album, which is all Les Paul. Should probably go back and listen to more of his earlier stuff.
Caring about the middle pickup is interesting. Most people seem to lower them and really ignore the 3 position. I always thought it was a cool tone that doesn't get enough love. A few months ago, Chris Duarte did a clinic nearby, and the middle was his home base. He would occasionally go to the neck or bridge, but really lived in the middle. It sounded great, and not exactly like every other bluesy Strat guy.