I also tank with this on with 14K+ hp 500+ def and 20/20/25 avoidance ... u barely miss , it is great . i would probably wear it without the nature damage but that is just icing on the cake. I got it mainly for my fury set though with it complimenting dragonspine . Funny thing though , rogues obviously cried when i get dragonspine even though i out dps them but it was a ret pally that wanted the vial over me , go figure :P sorry the edit was my question ... is there a cap for fury warrior , for hit rating that is when raiding??
Fury warriors +hit cap is around 200-250 we only actually need +10% hit to make sure all our abilities hit, but more is better for your offhand.