I played it when I tried all the Red Plates. I walked in with my jazzmaster while there was a 'jam' going on. I 'jammed' for about 5 minutes and then everyone left and I was the only guitar player in the room. So I walked the gauntlet of Red Plate amps. The Shredplate sounded GREAT but with my giant single-coil Jazzmaster pickups, I totally had the wrong guitar for it. I could tell if I had a guitar with humbuckers in it, it could be absolutely amazing.
On a side note, the new Kirk Fletcher Model is a STUPIDLY good amp. I've never heard such a huge sound out of such a small package...it was kind of a mindfuck to be honest.
Hope that helps.