I thinking asking Soundtrek for a style exchange forum is a great idea. If Soundtrek does not move on this idea, there are other alternatives. Bob Gelman has been running two very successful e-bay forums for Yamaha keyboards, including a 20MB vault of Yamaha styles.
The current I am working on now is capable of video capture (with two UW SCSI drives), so I am sure it can handle Gigasampler. But I would not mind hearing about any more portable solutions. I am thinking that some AC-powered lunch-box type computer with built in LCD screen might do the trick as long as it has room for a second hard drive.
Clif