most likely but it would require an extremely large amount of work to make it look and run smoothly, and even then, it won't look that good because he isn't rigged to do those types of moves, especially not when it comes to his clothe physics, MT framework is admittedly much better to swapping character models and animations from other sources in the game, because you get things like thisVergil is cool but his moveset isn't that big, is it possible to mod in new moves like trillion stabs or similar sword moves that don't require special weapons or that much motion capture?
posible honestly i could make vergil use any move even a bosses but clipping issues along with other problems in that video make it not as simple as that
i COULD however make a co-op mode for the game so that might fill that need you seem to have for something a bit extra....