I think that voice overs should be available for the main story-line quests and for the company quests, everything else like leves and all could pretty much do without. But during the story quests when speaking with my Path Companion or Lady Minfilia, I would like to actually hear their thoughts rather than read them in reference to everything that's going on in the story. The sounds and effects are added in at the right time to keep attention, but if one does not fancy reading all of the dialog, then they'll miss out on parts of the story, which pretty much defeats the purpose of the quest (past grinding) anyway.