More like the credibility of my system or living room layout. My room is roughly 18' x 13' ish and due to the configuration of the living room I have to fire the speakers across the narrow part (13'). Anyway, I thought I'd see how the sound changed firing the speakers down longways. After changing to my old cable, Carnival Silver Plus, and placing the speakers over two feet from the wall (speakers only placed about 1.5 metres apart) the sound quality is worlds apart from the usual position. True, it needs cranking up more to hear it at its best, but my God, what a sound.
As it stands, while living here, it would be impractical to make it permanent - unless, of course, we do major surgery to the bungalow.