splitting into a melee/caster hybrid wil likely be gimmicky but shouldent be imposible , but i dont think it wil be toptier and for pvp you dont have alot of cc so if you are cought its likely over
altho i would go with somethig like this: http://www.tosbase.com/tools/skill-simulator/build/xt8zf687a7/ went with paladin as this has som pretty high basedamage melee skils and one of the largest aoe rate skils in turn undead aswel as short cd with overheat and good party buffs
the kirvis plays in on this quite nicely with an magic based aoe aswel as support and divine stigma that increases both str and int your main stats you wil want
also went with cleric rank 2 for more heal tiles you are a healer afterall as wel as 20 hits on safety zone and divine might which pumps your skill levels and thus support or dps on demand