I feel those new upgrades make VS a little bit more killy, but the point is that one makes him a good buffer, and the other a good controller.
The point in Oath of the Freikorps is obviously to give Oathkeeper to your allies, but also the versus enemies damaged by him.
IMHO, the point of Nithera's Aftermath is the ability to move both your troops and the enemies, disrupting also the enemy's movement tricks. The fact of hit an enemy and shoot him for +1 damage is a bonus.
I don't see together the two upgrades, since both use your ap and I prefer to focus in one thing.