For our club AOV has historically meant to mean any variety that isn't one of the recognized varieties. With, black, blue, blue wheaten, brown red, buff, silver, wheaten and white being the only varieties that are recognized/accepted by the APA/ABA, lavender, splash, black gold, chocolate and All Other Varieties are considered AOV, by us, at our sanctioned meets.
This is how I have always viewed it and I think it should be this way for all breeds. It seems less confusing to me this way. I have read some pretty heated arguments on other forums about this subject. AOV means that if there were large fowl lavender, splash, black gold, and chocolate Ameraucana entered in the same show, they would all be competing against each other for Best AOV... Correct?