For my two cents worth after getting both Warrior and Paladin to Lv50 I have to say the Warrior/MRD is the better tank - better strength/damage output and a better HP pool to fall back on. I'd suggest picking up some DSP skills from the PLG/pugilist to help increase your damage and threat level, at the very least its nice to land more critical hits and dodge skills (Featherfoot).
-Flash (PLD) and Overpower from MRD are good aggro crowd control skills