God, Paul Gilbert is one of the fastest and cleanest players I've ever heard, but that scratchiness is AGONIZING, and probably is a large part of why I've never really liked his tone. And I love how his philosophy on picking with distortion is precisely the opposite of the generally accepted one on this forum
(referring to when he says to pick lightly under distortion, rather than picking harder and just dropping the gain to compensate as most of us, myself included, try to do; I guess it's a rhythm vs. lead mentality difference)
EDIT: And god bless the guy - "With alternate I can get bigger motions, and although bigger may not be as efficient, it's BIGGER, and bigger sounds more rock, and louder, and better, and I like rock and louder"; not only do I agree, but I also love any justification I can get to avoid learning how to economy pick
Every time I've tried, it's felt completely counter-intuitive and just taken way too much conscious thought