Actually the Summer NAMM 2004 booth for Jet Frets was full tard. They were touting the increased sustain offered by these massive I-beams with rounded tops they called frets, and their booth player was using a USA Les Paul with EMG 81s through a TripleRec on max gain. The weight of the guitar combined with the high-output pickup AND the dimed TR pretty much negated any such claims IMO.
Of course, I'm an a-hole, so I pointed this out.