I recently started getting into Oblivion and now that I've finalized what kind of good and evil characters I want to play, I had a question. Since many players do everything with one character (all the guild quests, for instance) I was wondering if it would be worth it to do only certain quests with the hero and certain with the villain, switching back and forth? That is, for those that have done this, was it a fun experience?

Basically, I was going to do the main quest, fighter's guild, arena quest-lines with my heroic Imperial "Grey Knight" (a custom class that's a mix of the knight and the warrior) and switch to my evil Dark Elf stealth based character to do the Thieves Guild, Dark Brotherhood and Vampire quests, while ignoring the main quest. Role-play wise, this just seems to make more sense to me.