Talk:Discipline points/@comment-98.233.161.198-20120529202650/@comment-74.98.253.32-20120609213641

Augments can be transferred freely. Core Skills, however, which is what Double Vault is, are weapon specific and would require for the character in question to have that required weapon equipped in order to use it.

So to use your example, Double Vault would work for Striders, Rangers, Assassins, and Magic Archers with daggers equipped, but not Fighters or any other vocation because they do not have access to dagger weaponry.