Yeah, you can. In the Main Quest, "Vows of Virtue, Deeds of Cruelty," you control Estinien as he and Gaius invade a Garlean facility. You quickly dispose of some trash mobs with a Dragoon's regular AoE combo, but when facing Arch Ultima, Estinien has a unique skill set. Three of his skills are named after Nidhogg's skills. Ala Morn, Drachenlance, and Horrid Roar. The Stardiver is a level 80 Dragoon skill, and Estinien's Limit Break, Dragonshadow Dive, is his signature move.