It is certainly... interesting.
This game comes with some unique and very intruiging aspects, but also a considerable amount of downfalls.
The gameplay is solid, but at times somewhat inadequate. The storyline is pretty good, but could have been better. The characters have a lot of potential, but don't really grow as much as they could have. The graphics are excellent, but the facial animation is often off-key. The voice acting is at times very good, and at times not so much.
All that said, I had good fun with the game. In the end, that's what's most important, no?
Should you buy it? If it's on discount, go for it. You might just find yourself pleasantly surprised at the unortodox lead characters and the different take on the classic fantasy settings. It is not everyone's cup of tea, but I think that past its flaws, it is an experience worth having.