Does anyone know of a situation where, for instance, someone took two small bookshelf speakers and mounted them next to each other on a 45 degree brace to simulate a bipole surround speaker?

Something like this:

I would think that doing this with, for an example, a couple of M3s would give more capability than most surrounds...?

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::