Can you be a bit more specific - just how "radical" is your approach (measurements)? Also, what is the typical sound that can be achieved by this method is the sound more resolving, clearer, more focused, or is it warmer, fuller, smother, etc.? Is room size a significant factor in that a smaller room may be a better match for this type of setup? My speakers are voiced on the warm side and my room has very limited depth; if I wanted to gain a bit more resolution (midrange clarity) would your radical toe-in be a viable alternative for me?
More importantly, what happens to the soundstage in your setup (specifically the outside information and width of the overall soundstage)? Typically, increasing the toe-in is great for the central image, but adverse to the soundstage width (limiting the field of information presented beyond the outside edges of the speakers).
Since I am interested in your findings, I would appreciate more details.