Ive noticed no matter how armed your hirlings and summond minons are you cant enter combat with out a weapon your self, even if you have reserched "tatical" combat spells, this woudl indicat that the game is not taking those spells into consideration. I think everyone should have a combat level with out a weapon, after all you can still pick up a rock and throw it of try and stangle someone to death.

Maybe an attack value of 0.25? for no weapon at all? And any one with trianing ie assasin or some sort of wildness traning or an adventura should be at 0.5