Board Thread:General Discussion/@comment-98.102.158.34-20140908143429/@comment-4010415-20150719001156

Wait, wait, wait. When and where did they ever say that fusing Dust with oneself is frowned upon?

The only negative thing that has been said that even remotely relates to that is that using raw Dust requires a certain level of discipline, in order to keep it under control. I can imagine that losing control of Dust that's inside you would have much more devastating effects than if, say, Weiss lost control of the Dust flowing from Myrtenaster's exhaust port.