I recently switched speaker cable polarities on my system (which contains a BC3 preamp that inverts) and while I could not pinpoint what was better, it was better. I had been running it for over a year the 'wrong' way. If forced to describe, I would say that the sound had a more 'relaxed' feel to it, but that may be my word for something else audiophilic. My English is pretty good; it's my Audish that is very spotty.
