I've spent about five hours with it, and I think I'm going to walk away respecting and hating it in equal measure. It's very intricate and represents a wonderful openness that's lacking in the genre. At the same time, the game is brutal and punishes any mistakes, making me a part in many failed experiments when it comes to character building. It's also way more linear than I think anyone is willing to admit. Sure, you can spend hours stealing paintings and getting rich, but when it comes to leveling you have to seek out mobs that are close to your level or you end up hosed in combat. I want to try a new set of main characters but I have little desire to spend so much time on this again.
Glad people like it, but I don't think it's for me.