I believe they already said the seat belt would be over the right shoulder.
as the way it works out for us, when we are in a vehicle, I almost always drive .... after thinking about having the shoulder belt attached on the right side, I decided to ride in the passenger's seat today .... I don't like for the belt running across my chest to be tight so I adjusted it in the same manner I do when driving .... bottom line for me, once the belt is snapped into place, I couldn't tell any difference .... for me, I just don't see it as an issue