I may have only read the graphic novel however I was put off attempting the novel. Such a promising premise and beginning yet when I expected things to pick up the story just seemed a little flat. The creatures seemed too abstract, (trying too hard to be... Well, I won't spoil the story) that I couldn't relate to them in any sort of way.
That said, the artwork is superb. I am unwilling to devote time to reading the novel now I am aware of the big reveal, a slightly underwhelming reveal at that.