Depends on what you want to achive in pvp, aka arena,bgs etc?

I would say you could do fairly well in bgs but you will get owned so hard in areans that you most likley never would return.

Your priest/mage will die extremley fast untill they are well geared, most newbs will zerg your paladin while your team can dps for free. (use divine protection instead of divine shield, its extremley hard to spot and it wont make your enemies swap to your casters.)

A pro tip is to hide your team by ledges and objects that can be fired trough and pretend to be a freekill on your paladin, kinda funny when you remove theyr hp within seconds. (it usualy taks 2-3 min before they realise it and release theyr dead body)