Hi Eagle737.
Besides the reasons mentioned above you also might want to consider the Asymmetry.
In an assymmetric thrust situation you want to have as little drag as possible because that improves controllability margin.
And that is good to have. It keeps you from loosing yaw authority.
You definitely want a plane as little draggy as possible in such a situation.
So as the previous posters stated: Stick to the books. They are there for a reason....