So, the Soul Sacrifice demo finally launched yesterday (Don't even get me started on how badly Sony needs to get their stuff together on the PlayStation Store)! So far, it feels good. The graphics are definitely competing with Uncharted: Golden Abyss as the best on the system. The character model's hands look a little wonky to me, but that's just nitpicking!
The camera in the tutorial "Boss Fight" took some getting used to for me, the fact that it was staged wasn't relayed in a helpful way. Combat works pretty well. I really like the different "weapons" you can use. It bothers me that you have to deactivate the weapon you're using to select another, because the animations coupled with having to physically push the buttons takes just a little too long.
think it's cool that the save transfers to the full game, and I'm sure I'll have more to say once I play more.