In the books, it talks about supernatural creatures and the "World Walker" power. It uses the example of a white court vampire vanishing in the back of strip clubs, or brothels and the like. Harry asks if all supernatural creatures need to take world walker, and William replies No, thats just part of their supernaturalness.
So, do you grant this as a "free" power to player characters? White Court lust vampires can transition in brothels, strip clubs, etc. A Changeling dryad in a city park, or forest, a changeling troll under a bridge, etc? Or should this be a one point power? And, what counts as Supernatural? Not werewolves or wizards, based on the books. How about Winter or Summer Knights?