My current layout is all bi-poles (except of course my center), all old school DefTech (BP2000's, CLR-3000, BP-20'S and BP-10'S), and yes while needing the space to use them as mains properly, I have a very large room, and the opposing drivers really help to fill the space as surrounds placed sideways, right up against the wall, firing forward and back, the side reflection you get this way really lends itself to not realizing that they're not firing directly at you.