In that case, let's see... We have a bloodline with the same namesake as the infamous Owls. Now, let's look back in some of the more disliked bits of VtM lore, where Vicissitude is a manifestation of alien parasites, called Souleaters. Aliens in WoD are generally assumed to be something similar in nature to Umbrood, aka spirits. Now let's remember that the Strix are also something similar to spirits, but different. They have Breath-Eating abilities, and in older myths the words "soul", "life" and "breath" are often used interchangeably.
This all fits perfectly together. The Strigoi must be a bloodline of vampires infected by the smoke-and-blood pseudomatter of the Dark Places that the Strix are spawned from!