Maybe against light armor, but i think crushthrough damage could be a bit broken. Not sure though, maybe worth a try.
Before:How do you expect to pommelsmash from held stab? Also the chamber part makes 2h weapons chamber twice, which is way too powerful.
2h nudge only usable from overhead held attack stance
After:
-usable from all "held attack" stances
-it can chamber
-it deals minimum one damage after armor soak and stuff
problem solved, 2hmastertace becomes 2harianrace
Is damage done dependent on the opponent's armor?