Unico Outlet Placement

I have a customer that does not like the outlets on the outside wall in the celing. He suggested moving them to an interior wall near the celing. The house is shaped like an octagon so near the exterior wall the outlets are space farther apart compared to if I were to locate them on the interior wall. So in one room I need 5 outlets I will have 5 outlts spaced about 2 inches apart from each other witch brings up a noise issue. Of course I explaied to him about placing the outlets where most of the heat loss and gain is take place, but he saw this done in Chicago and really liked it. Question is will this work and has anybody had the same situation. Any input would be appreciated