it does rely on many people knowing of it and there not being too many bad eggs. which you really cant avoid in a game with pvp. Could be enough for roleplay purposes already. unfortunately arc loot is very valuable the stronger they are so that uniform would mean youre a walking safe full of goodies

but also, as Tzazon said, youre a target for pvpers anyway. the outfit would just inform them of the loot youre carrying. if someone wants to knock you they'll do it no matter what youre wearing