You can have good success in pvp with multiple shockadins. I actually hit 1900 in arenas in 3v3 with 3 shockadins. We all have the spell damage gear from arenas and can instagib anyone up to about 15k hp in 1 sec. If that doesn't kill them, then the 3x Consecration probably will.

Holy Wrath + Divine Favor + Holy Shock + Judging Seal of Rightousness + an on use spell dmg trinket = 5k holy damage each in 1 macro

We also have 1 of us specced into Sanctity Aura for +10% holy damage also.