i doubt it.  to be honest i don't see how PvP multiplayer would be much fun with this kind of setup.  By that i mean that I don't think the levels or gameplay lends itself to sniping each other, only NPC enemies.  I agree though that a game where 6+ players hunt each other down with sniper rifles would be AWESOME if they could find a way to make it work without it being frustrating.  Otherwise what's the point of just running around with guns in yet ANOTHER frag-fest game that couldn't stand a chance gainst the CoD juggernaut?