So, just finished the game, which was taken from the Dracula Dossier.
It was fun -- much more freeform than I anticipated, despite having a highly detailed character sheet. Normally, when I play a loosey-goosey game, I'm used to the character sheets being extremely spare, with only a few stats, while sheets with lots of stuff on them tend to be, in my experience, much more locked down in terms of what a player character can do.
The rules definitely support the fiction, though. Everyone was clearly a badass in their particular roles and, despite the fact that the enemy is very powerful, it did feel like we had a chance to make a difference. (I do think, if we weren't limited in time by this being a convention game, we likely would have lost all or part of our group after escaping the scene of our successful caper.)
I definitely want to get a chance to look at the pyramid designs in the game, even if only for use in other games in future.