PvP gear question

Hey guys. I've been putting off learning mage in PvP for quite a while since I had the extremely unpleasant experience of leveling one on a PvP server but know I've finally decided to get some gear and practice. I've got all of my emblem gear both heroism and valor and am around 50% naxx 25 geared. I was thinking of picking up the savage gladiator for heroism and some hateful with my valor but is it really worth? Like am I just better off PvPing with PvE gear compared to the savage gladiator set? Sure I die to a sneeze but at least I have some damage. I doubt that'll be the case with the blue set. What do you think?