User blog comment:BROTHER BAN-KAI/514. Born in the Darkness/@comment-3143776-20121030191735/@comment-5675229-20121101221754

Maybe, since they are not Quincies, they are Vaerindarch (Pardon my spelling), they do not follow the quincy code anymore. Sorta like how they don't kill hollows anymore. Also, take Uryu's "sword" for example. Though you can not deny Ywach's Broadsword....