User blog:Xanneer/OCs and Dust

Ok. I go another question for yalls. So I was reading through the TvTropes description of RWBY and I noticed a line that says basically, humans harnessed Dust to fight back the Grimm, and that special schoold are made to teach students to harness Dust. So heres the problem: only one of the characters on my team actually uses Dust. None of the other three use Dust, one just uses two plain dual swords and the other just uses a claw weapon (think wolverine from x-men) the third fights through a combination of her semblance and a martial art. My question is whether usage of Dust is some kind of hard and fast rule. Is it alright and canon friendly if a character is a hunter or huntress but DOESN'T use Dust? Is it like an absolute rule that a character has to use Dust?