I have never met one person who likes Grand Funk.
Stevie Ray Vaughan was very intense. Maybe that's what caught everybody's attention. As a player, he didn't do anything amazing.
If you can play well in the studio, you can play well on stage.
I can never remember what I do even in the studio.
I can imagine that Rod Stewart likes giving autographs because he's pure showbusiness.
In my early days, I never used finger vibrato at all. I originally carved my reputation as one of the 'fast' guitar players.