I think Davis brings in a couple of schecter 7s and even 8s (Damien series?). If I'm not wrong g77 has some too.
I use a Jeff Loomis sig, got it off a softie. For it's price first hand I think it's rather awesome.
Ash bodied, EMGs 707, OFR, maple fretboard, and kick ass satin crimson red finish on the body and neck. The neck is really nice and smooth, don't expect ibanez's profile as it's rather chunky IMO.
Tone wise I kinda feel it's abit more bias to presence as compared to my brother's hellraiser 7. Both are pretty solid guitars, also the loomis feels much heavier than most of the others guitars ive tried.