Read above,
NoSanninWa. It's
Kuwashima Houko as Clare.
When I heard that Claymore was getting an anime adaption not too long back, I was iinitially excited and worried, as Claymore's pale atmosphere in the manga expressed with it's art style and tone can be oh so easily botched by animation. But seeing Madhouse as the animator eases me a little, as they've proven times that they're very capable in catching the essence of the manga and translating it perfectly, even improving it as animation. Death Note, Monster, Black Lagoon and BECK are some quality examples.
It probably won't have too great of action sequences since Madhouse is
still madhousing their animations like there's no tomorrow (( SaiMono 1/2, Death Note, Devil May Cry, etc )) , but hey, who am I to complain?
Edit : Apparenty NoSanninWa did an edit after a reread. :P