I read the first series and half of the second (and the first manga they released about Scourge). very much enjoyed them. they aren't the kinds of books you're expecting when you first see them or read a description. hope to finish them one day (my copy of book 4 from the second series got stolen before i could finish it. i have 5 and 6 though)
came across a fan animated music video "Scourge AMV - Radioactive ". actually not to bad considering it was animated in MS paint. set to the song Radioactive by Imagine Dragons. I'd post it but it's fairly "accurate" to the last book in the first series. and as such, is very not safe for work (read: bloody).
Seeing it really makes me want an animated series for the books. Maybe get the same people that animated Wolf's Rain to do it.