I heard about it directly in person at events and I haven't read enough of their online stuff to know if they wrote about it or not. This wasn't all the people who had worked with Vassar, just "a" post-Vassar branch among at least a couple different ones. Another was more "magick" with strong Crowleyan influences, sort of a The Invisibles LARP. There was some overlap of branches and it would probably be hard to describe exact boundaries between them even for insiders. Leverage wasn't particularly influenced by Vassar so I'd consider them a separate thing.