Sorry, the long skirts and robes are going to be just as conforming as the dusters were in F:NV. And the hair will probably be stiff as wire.
Seen no cloth physic, however hair is probably real improved over Oblivion, two ways. First layered hair, put on a helmet and the at the back is still visible. Ability have longer hair, problem in Oblivion was that hair was just parented to the head for some reason, they will probably handle it like hoods so it lower part is parented to the chest.