I'm from the philly area and Scott McGill has been playing around here for a long time. In fact my friend played bass for him for a short while before he got hooked up with Michael Mandering(sp?).
I always thought he sounded a little too-much like Holdsworth though.
Listening to someone play like Holdsworth is like listening to someone play like Van Halen, it's impressive at first, but then you kind of feel like "hey, that stuff is sacred, stop doing that and come up with your own thing".
Just my opinion.