@Kokushi One of our GMs is making a Hunter. Once he posts his, you can ask him--I'm pretty much leaving him in charge of Hunter stuff.
But the basics is that they tend to work independently, but they do make up a community of sorts. The Society comes to them hoping for a temporary truce in dealing with feral vampires as they are a danger to both vamps and humans. Whether your character would be up for that or not is up to you