Played through the demo five or six times (the ability to skip past the intro was a fantastic idea that helped make me willing to go through the demo again) as different builds and I plan to pick it up at release for sure, though there are some things I hope they have hammered out for launch, can patch after, or consider for a sequel.
It would be nice if stealth builds worked more consistently, for example. Even using the distraction item it was difficult to get close to some enemies for a backstab, impossible for others. And sneaking up and dispatching an enemy in two attacks drew a crowd, but if I was able to hide (behind a tent in one instance) they would de-aggro...but just stand there waiting. Maybe that's a bug, but it was annoying.
The loot was great though. I loved the ability to quickly compare between items and the quick look I got at smithing looked pretty positive. I leveled to nearly five in one play, collecting everything, then salvaged and tried to make the best items I could as time was expiring. The potential is there for some really nice stuff, given time to get better materials...