Board Thread:Skyrim/@comment-112.198.82.247-20130724121145/@comment-137.219.181.53-20150827060833

Everyone keeps saying things like the dragonborn's soul will be ripped apart by all the daedric princes, but doing a quest for a daedric prince does not mean you've pledged your sole to them, unless you did (like the nightingales), but otherwise you've just done one or two quests for a daedric lord for loot, I wouldn't exactly call that devout.

Either way I remember reading somewhere that only the main questlines are canon, so yeah.