As a coolie owner for going on 8 years now, breeder for 4 1/2years, I have spent hours upon hours looking at different kennels, lines, pics from the 1800's of the breed involved in producing the breed, pics from all different regions of Aus. Differences within the breed YES (size, head shape, weight, build, height, ear set etc...) but I find that amongst breeders the consistency is there...I can by eye, pick out a Toolalla dog, a Tjukurpa dog, a Yatahae dog, a Hunterslea, a Coolibah and Borahview of course...no problem, very much consistency in litters produced within the different breeding programs.
My self, and others including Sara and Linds I am sure (check back the pots with Tamlyn, Lindsey picked out he was Avalon in 2sec.) can recognize a dog bred by these different breeders...simply because we look at them all the time, just like you do with your Mals, Aussies, Paps, and more...