My team at work did 'corporate ninjas' a couple years back. We wore shiny black shirts, black slacks and red 'ninja-sash like ties' but I think we just looked like TGIFridays waiters with ninja hoods on. Also, the ninja hoods we got at the store looked like burkas.
But I was able to wear my plastic sword to work. And wear my face obscuring mask, which is a little odd given the high security environment in which I work.