I feel like I would be a combination of both. Diplomacy first, try to make friends and grow the clan to epic proportions, building villages and harvesting crops. Though, we cannot look weak... that's where the Conqueror aspect comes in. Those who oppose you and do not wish to be cordial, or diplomatic. Well, then they shall Die by my blade, and my armies blades.
"Whoever appeals to the laws of his fellow man is either a fool, or a coward. Whoever can't take care of themselves without this law is both. For a wounded man shall say to his assailant, if I live I will kill you, if I die you are forgiven. Such is the rule of honor."