Board Thread:Speculation House/@comment-4830106-20141010002549/@comment-10380701-20141013152717

As someone who practiced Arnis (look it up. It's an interesting martial arts) for a while, I can say that's actually possible, as the training usually starts with a pair of rods, and ends with you barehanded. It's fucking badass once you're in the final leg of training.

So from that assumption, Ruby may have finished basic training and advanced weapon training, but didn't manage to take the non-weapon related classes in later years, such as advanced aura and semblance usage.