[@Vesuvius00]
Actually, Gems would be more likely to have an advanced understanding of their element, rather than the Drakken. The Gems have only one element, so they spend all their time training with that single element; meanwhile, Drakken have two elements, and have to split their knowledge and time between the two.

There's also that the Cultists have significantly more pressure to have an advanced understanding of their element- the Drakken are probably always in conflict with one and another, but they do not seriously expect to fight a 'real' war with an equally powerful opponent- and they aren't, not really. But the Cultists are going to give it their all, and so it's imperative that they tear apart as many Drakken as possible. So the Cultists would probably have an advanced understanding of their one element, unless they're out on the field- such as the Merchant. Zane would have a basic understanding of his element, and would be decent at swordplay- because he isn't meant to fight, he's meant to gather intelligence and live his life.