I got, finished the main quest, and all i gotta say, is that was pretty fun. It just adds 5 more hours of gameplay basically.
I loved it! It was a beautiful wintery scene that I craved to have during December, since it's been about 6 months (When I was in Alaska for the Wedding) to see snow once more.
I have to admit, the first part of the quest was extremely short. I was very disappointed, until you wait about 2 minutes, then part 2 of the quest steps in. The puzzles in the new dungeons you explore are a bit challenging in comparison to most you face in the main game.
The biggest surprise is the bonus weapons, the weight loss potion, weight gain potion, an augment remover device (About time!), and the all sleaked-out KNOTHOLE KNIGHT ARMOR SUIT. Which is by FAR the best looking outfit in the game by a landslide! See for yourself! Here's me! ^_^
I came, I saw, I CONQUERED! I am the legendary Hero of Albion! Beloved by all!
Also note: THIS quest does NOT effect the main storyline, it's more of a side-quest.