Yeah, I'm finding I like it more, the more I listen to it (on about my 4th listen now). I found that with Subliminal Verses - I was a bit 'meh' the first time I heard it, but some of the songs from there are now in my all time favourites.
I think Sulfur and All Hope Is Gone are mt favourites so far. The slow one near the end I quite like too, even though it's not that Slipknot-ey.