Just checked the demo out earlier today on Steam. I had fun with it, despite the demo supposedly being crazy buggy (I only saw one and it was a shader issue that didn't affect gameplay at all). Like llew silverhand, I don't think I'll be picking it up until the price has dropped, though.
The bugs definitely werent on every playthrough but on the ps3 i had problems with text just flying through so fast you couldnt read the conversation and there was no voice after completing the starter quests. After that i dont think i had any major flaws.
On my pc it was basically unplayable for me as 1. keys were unmappable and when i play on a pc i refuse to use a controller and 2. they had a glitch on AMD cards apparently where you had to switch a few things off so you could even see the game.
Other than a few camera problems, that was all i experienced. And apparently ive been told that the camera still remains a bit of a problem and even though on their site the person who was solely resoponsible for the camera, said it would be adjustable in the real game, and its not.