i'd go with warrior + lock.


not because they go well together, but because the rogue doesnt go well with either of them due to its style of play.
two melees will be a pain for you and rogue/lock combo is terrible unless you just park the lock and have him throw in a few dots on each mob each fight.
so the lesser of many evils? warrior+lock. warriors have better aggro management abilities with dpsing lock seems best. you will have to bandage and eat often though.