Vampire Ankh

Why is vampire ankh depicted as a sword (dagger)?
Aset Ka depicts it normaly.
But I see a lot of pictures and symbolism, where ankh is depicted as a sword (dagger)...

I have read, that it is because of the game "Vampire, the Masquerade" or something else of this matter.
They are the first ones to depict it as a sword.

Is that the only reason? It just seems quiet popular.

That's a roleplaying ankh. The bladed one you see in pop culture is used in computer games, cosplay and by roleplayers.

It's not a real ancient Egyptian ankh.