Hi Marty. First of all, a little bit of flattering like I never did with anyone. I've learned to play guitar alone with a Rust In Peace tab book 15 years ago. You can't imagine what a huge influence you are for me.
I've always played holding the pick with the tip of my thumb and index fingers, even when I saw you play holding it between the thumb and the knuckle, but that seemed way too difficult for a start, and used very heavy picks.
Now I've get back to the guitar after five years of inactivity and I found easier to hold the pick as you do, and also found intresting to use medium-thin picks, they allow more expressive dynamics. Also I think the two things are somewath linked.
The question is, What kind of picks you like to use?
Thanks, keep playing as beautyful as you do.