I began using 2 handed weapons quite long time ago. I started with halberd. It was a decent weapon, but not enough for me, so I went to Italy in order to buy a Halberd of swiss guard. I was satisfied with it, it's slow, but when you hit with it, the enemy will surely feel it.

But after some time I decided, that It's still not enough, so I took another long trip, this time to Aragon and bought Spanish great sword.
I chosen 2h weapon because I'm an archer. One day I though: "I won't be able to use my horse in battle, so why not get 2h weapon?" And so I did. Also, you still can use heavier armour in duels despite fact of being an archer.