Interesting, ours are demons, no souls typically witha few exceptions, and holy symbols and water are problematic, as will be a stake to the heart, or removing the head. It's a little different from some, and there are some sources in this world where I'm uncertain if they actually should be called vampires at all. It's important to know which you're dealing with.
There is a small group of us that works with supernatural forces and your expertise in that area would certainly be appreciated, although it's not so much a job. With your skillset however, I'm wondering if you wouldn't be able to find your way in one of the various law enforcement agencies here in the city?