Think it through. WIth better alt management functions as is being talked about elsewhere, 'those PvPer' ARE you. Or other players in your village that wish to play PvP. I would run several PvP toons as well as a mooner. When I distinguish between PvPer and Mooners I am more referring to toons than their players even if some of those players prefer one over the other or one exclusively.
If they come back you log off your mooner and log in your PvP toon. ONly reason I haven't really invested a shitton of effort into PvP toons is because of a broken combat system. I have a murder alt on standby should I collect a scent or two worthy of use but other than that it's not viable to make a combat ready toon that isn't my mooner.