I played the demo of this about a week ago and totally forgot to post my thoughts here...
Anyway, it's pretty good. It took me a little while to get used to the controls and how the L2 and R2 buttons act as modifiers on the main buttons, but I found myself really liking the combat, even if it was a little easy. The health never returning to 100% after you get injured is a nice touch as well, and might make the more wide open parts of the full game feel a bit more difficult, at least.
The only problem I have is that the actual RPG mechanics feel a little thin, or, well, almost nonexistant. I know it's just a demo, but I would've loved to see at least a bit of inventory management or a skill tree. Also, the voice acting is pretty grating.
From what I've played of the demo, doesn't seem like it's something I'll buy on release, but definitely color me interested.