New GMS exclusive content soon?

he's holding just a 2h sword, nothing else, not even a claw, gun or knuckle
Lukan is more diverse in his weapon mastery than Crimsonheart.

The statue they pan across in the video when they talk about Christopher Crimsonheart has a gun, throwing knives, and a grimoire/tome. It's just the bottom half, but he might have also a sword and a bow strapped to his back. It's feasible that even if you mastered all 5 disciplines you're not going to be wearing all the weapons all the time.