Talk:Qrow Branwen/@comment-27640692-20170108060832/@comment-70.79.121.132-20170115025737

"It's always there- whether I like it or not. "

-RWBY Volume 4 Chapter 8

That points to him having no active control of his semblance, which means that he doesn't have to work to maintain it, so it probably doesn't deplete his aura. He also said that his aura wasn't like most. But I agree that it probably has a range.