Board Thread:Off Topic/@comment-26397825-20170714130723/@comment-26397825-20170725133839

Not really, blood is not really a factor in RWBY. He'd have to be a criminal hunting civilians for blood to really be an effective way to attack people.

Grimm don't bleed, and Aura protects Huntsmen from harm so they don't bleed either until their Aura is broken - which takes more than just a few hits from a guy wielding a sword. He'd have to work past the entirety of their Aura to finally be able to do anything to their blood, and by that time they've already gotten past the majority of his as well or beaten him.