Vampires, by their very nature, do not require weapons, as they possess supernatural strength. These are not knights, but rather vile, low creatures, not necessarily of heroic origin, and certainly not warriors... perhaps they pursue some common goals with the rest of the undead, but the "hundreds of years of experience," as stated in their description, has no basis. This is not a vampire prototype. I'm seeing a vampire with a sword and without huge fangs for the first time. Nonsense...
P.S. I completely agree with Katrine's post.