It will have a use in PvP once that new helmet comes out that disorients enemies when you self res. Anyway, I usually have Radiant Skin on for Crota/normal VoG but if I'm going to be taking the relic for the team on Hard mode in VoG or something I put self res on because: 1) I can't use radiance while alive anyway because I'm holding the relic 2) if I do happen to go down the team won't wipe when the relic isn't grabbed