Have you had anyone testing on a sis based system. If not then I could do that this weekend, I'm currently away from university and my amd box, but am heading back up on friday. I can give you exact chipsets when I get back but the major parts are:

AMD X2 4600+ S939
BFG nVidia 7900GT/OC
Asus A8S-X
Creative Audigy 4 (non-pro)

If possible I wouldn't mind helping test rev 2 and will give more details about it when I could.

EDIT:
just grabbed the chipset details and such from asus website so:

Chipset: (Northbridge)SiS 756, (Southbridge)SiS 965L
Audio: ADI AD1986A (if I get audio through either onboard or audigy thats cool)
Lan: Intel 82540EM PCI Gb LAN