What do you think fits a Berserker?

Definitely Two Handed.

Two handed, mostly axes.

Orc would probably fit this the best with Berserker Rage.

In one of the Black Books, one of the reward choices is to be able to receive 50% damage for a short period of time. So, couple that with an orc's ability to shrug off 50% damage and you'll be taking only 25% damage for a period of time.

As in Orc berserker?

I'd probably go one-handed. Berserker is more about light footed aggression whereas a two-handed weapons is heavy.

Dual Wielding without Body Armor.

I don't like dual wielding, but it seems best suited to a berserker. Just because the whole philosophy of berserker is disregarding defense and overwhelming your foe with savage flurries of relentless offense. A dual wielder has to live by the same philosophy. A shield definitely doesn't fit. DW > 2h > 1h & s. If they bring in blocking with dual wielding in the future then there'd be no difference between 2h and dw, but as it stands dw is more berserkerish.

My Orc character is light armor (fur with some Forsworn) and uses dual one-handed Orcish axes.

I wish there was a mod which adds Orcish shoulder pads to fur.