What is people's opinion on it? I've heard from reviewers that the sex dialogue and romances are still as pathetic as before with one reviewer noting that after three lines of dialogue, a woman jumps into bed with Geralt. There may be a decent RPG behind this Assassin's Creed combat clone and there certainly are people who are enjoying this game but it sounds like it's just really The Witcher with added Assassin's Creed combat and nothing more (which I suppose some will like).
Not that Assassin's Creed's combat is bad. I think I'll give The Witcher 2 a pass though. If the quests and dialogue are anything like the first, then it's not for me. If they release a demo, then I'll know for sure if my concerns with the first are fixed in the sequel.