No I mean you can just have a fantasy sort of action with mellee combat and magical stuff in a contemporary setting, think DMC or something like that. It doesn't need to just be a basic third person shooter....I'm not sure what you are saying here? Do you mean doing a World of Darkness: Medieval type game in general? Or specifically using this game engine to do so? Because I do believe they did publish some books back in the day for alternate points in history that would let you play in pre-modern eras. Though frankly there's nothing stopping a Storyteller from just doing that in a fantasy setting.
Or do you mean an urban fantasy game?