The art is lovely (besides a few things that bugged me, like how derpy the dragons look). I think that's the biggest draw of this series, no pun intended. It doesn't really break the mould anywhere else though. There's some character development and they have a good dynamic but the characters themselves are pretty stereotypical.
I dunno, i'd recommend it, but don't expect anything groundbreaking. if it sounds like something you'd like, you probably will, but if you've read a lot of similar things it's not going to blow you away.