"I am surprised that the breeders of working cockers are not more forthcoming about the differences between the strains when they are talking to prospective puppy owners "
We are!! I am probably one of the few working breeders that has experience of owning and breeding both types. So - when people come to see pups here, they know exactly what they are looking at and can see the difference between the types and have a chat (interrogation by me!!) . They go away with a paper copy of the pedigree to think things over as I will not sell to someone who I have never met etc - that way they have 4 weeks or so to ask any more questions, check up on ancestors etc. When they leave here with the pup, as part of my puppy pack I provide a 20 page A4 display book with all the KC stuff and a good version of the pedigree . microchip paperwork, vacc card, insurance, copy of eye and hip scores for parents etc etc and as many pics of ancestors as I can lay my hands on. I think I am as honest and upfront as possible.
Many working breeders will not sell to non shooting homes as maybe they are being honest about their stock in that they feel not suitable as a pet. Most of mine go as pets as I dont breed high energy cockers as I personally dont like them. Again, we are back to the argument that why should only the working strain breeders have to explain themselves, why do the show strain breeders not make sure that the buyers are aware they are buying a show strain and not a working strain?
However - you will always get breeders of both types who will sell to anyone who has the cash and that will never change..