I know its not probable, but I hope their weapon and armor is lootable.
Yea, it bothers me when armor is just part of the model, like with Goblins in Oblivion. It makes sense for things like Dremora and Mythic Dawn agents to not have lootable armor, but I think if anything humanoid and corporeal is wearing something, we should be able to, too.
But here's my two cents. There are four draugr, one with a sword, and 3 with other, hafted weapons. It looks like either: a battle axe, a pole axe, and a bardiche (which are all quite distinct from a halberd...meant much for for chopping and slashing than stabbing) OR: two battle axes and a bardiche (what people think is a spear) or three battle axes. The only reason I would think there are more than one type of weapon in the pic is because of the grip, but that could just be an animation, and is definitely not more than just different "stances" for similar weapons, ie, you would not hold a pole axe the same way as a battle axe, even if they are the same weapon in game (ie, share the same perk trees)
So long story short...I see no halberds. I do see pole weapons, but there is a large gap between pole-weapon-halberd-spear. Generally poll weapons can be as short as 4 feet long, (like a dane axe) whereas most halberds and spears are 6-8 feet long. Because of that length, the heads are much smaller and designed to be held parallel to the ground and thrusted. Smaller pole weapons with larger heads are strictly meant to be lifted perpendicular to the ground and brought down in a chopping motion. Obviously, you can also swing them from left to right, but you get much less power in your swing, it's more of a defensive strike to keep distance.