For the game you are running, I propose a similar solution to the question of Red Talon or Wendigo Garou showing up. If they are too malformed or distinctive to make the trip on the run then they have no reason (or rather way) to show up. The prematurely bald person (or even the one who never doffs his hat) can fit a lot better than the person with horns.I dont dislike them. i just think theyd clash with the more Pulpy, Weird West Heroes in Victorian England chronicle im going to be running. Just tired of Grimdark games and stories.
I will admit that my comment on Metis was a bit extreme though.