I got the board and expansion card yesterday, and while I've not had the time to work on it properly, I've had a think about who'd buy it and I'm really struggling to figure it out.
The mechanics of the implementation are pretty puzzling, too (heatsink weight and mounting for the AMD socket).
Certainly one of the hardest products to properly consider that I've seen in quite some time. I'll have fun with it though, I'm sure. I'll get round to looking at it fairly soon.