My bet is the Vamp will get his hands on the sword.
My other bet is that the Sword itself has a very definite Opinion about who should be worthy to wield it. And the Vamp isn't that person. Especially given that said Vamp is trying to take shortcuts in getting posession of it.
Might be a handy carrier to get it to where the sword needs to be though. Wouldn't be the first time that Trope's been used.
While it's true that he may not know where the sword is, he is an idiot after all, that assumes he is working alone and doesn't have someone else going after the sword.