At the beginning levels it would be a pain in the ass since you're weak as heck and you don't exactly have the best spells at your fingertips. At the later levels pure mage is the most powerful thing in the game I know that. Even then I would think they would use staves instead of nothing.
I disagree with this. A beginning mage has Absorb Health, one of the more potent Restoration spells. You also start with Cold Touch and Shocking Touch, so you already have the elemental Destruction magic covered. You have a summon (skeleton) and Turn Undead.
And you have Soothing Touch, which is much more valuable than you might think. A low level mage doesn't have to stop to fight every critter that attacks on the road. Just hit it with Soothing Touch, and run on. If the creature follows you, that highwayman hiding in the bushes is going to yell "Stay away from me!" instead of asking you for money. :wink_smile:
A mage can hit an enemy with a couple of Flares before they can move, slow them down with a summon, and finish them off with a couple of touches of Absorb Health, which heals the mage as it kills the enemy.
In the later game, the mage is going to use a combination of Illusion, Restoration and Destruction, and will be able to kill on touch much more effectively than any weapon can.
An unarmed pure mage, at any level, should be able to stand toe-to-toe with a fully armored marauder swinging a claymore, and walk away from the fight with barely any loss of health. It's just a matter of hot-keying the right spells and potions, and knowing your enemy's weaknesses.
They do not need a weapon.