DK can probably cheat with PVE gears. Paladins, not. Low resilience, you die too quickly and you don't have time to react with bubble. Damage wise, PVE provides minor minor improvement over PVP gears (unless you got 2 pieces of t10).

Blizzard has pretty much separated PVP and PVE paths in this game. The 2 rarely cross now. Damage is too high without resilience. a warlock can kill my 5800 GS PVE restore shaman within a fear duration without even trying (some random bolts crit me for 18k per hit).