Dwarves versus Orcs.

Well, you have Ingvar, right? Insanity is actually very useful for him. Plus, you can easily give up leadership in favor of something more useful when using a defensive tactic, without retribution.

I think it's better to take ballistics instead of leadership, to shoot down warmongers, because when there's a very large stack of them, with rage and a hero specializing in them, and they also have a retaliatory attack with 2 damage... it's dangerous to go head-to-head with them.