My guild and I got in an argument about this skill, keep in mind that we are all very new to PVP.
They are suggesting bringing this skill, while I am arguing not to bring it. To me it seems only effective when the team using rust is winning, which makes it pretty useless since its now not needed.
They are saying that rez sig is our biggest threat and my opinion is that there are very few times that if we have the upper hand that a team turns around and gets a rez chain off and comes back for the win (it has happened though)
Also keep in mind that we lose more battles than we win

and in those scenarious we are the ones rezing not our opponents.
My question is, does anyone use this in PVP, and is it effective? (we play Team Arenas only)