Highly unlikely. They didn't spend a small fortune to hire two voice actors and make it such an integral part of the game, just so you can turn it off. My biggest problems are that the dialogue system doesn't give you full detail on what you're character is about to say(the same system bioware...
I personally think they've stripped even more Fallout from the already bare Fallout 3. There has been no confirmation or concrete evidence of a skill system, the game seems extremely action heavy and a voiced protag places even more strain on role playing choices. I personally have no faith in...