Shred master Paul Gilbert has an idiosyncratic guitar at his tonal helm. What you see here is a personal Ibanez 'Reverse Iceman'- an Ibanez Iceman model, given a flip-over by the manufacturer's luthiers, to PG's specs. Do note the lower bout cutaway which is the only alteration of the original design, done out of a necessity to reach the upper frets.
It's also interesting to note PG's current preference for single coils which proves you don't need a humbucker to sound intriguing under lots of overdrive (well, Malmsteen was there before PG but Blackmore was there before everyone else...). This particular guitar was played comprehensively at the recent NAMM 08 (winter) show where the shredmeister promoted his latest endorsement- nope, it's not an Ibanez guitar but Marshall's Vintage Modern amp.
Marshall Vintage Modern (VM 2466) Review: http://soft.com.sg/forum/guitar-amp-reviews/24718-marshall-vintage-modern-2466h.html