Thank you for clarifying. In your response it seems that you concur that it is in fact dangerous (I firmly believe it can be deadly in some cases) if a dual role is practiced with a working Service Dog for disabled people with specific types of disabilities. Is that correct? It also appears that you also concur that single discipline for a working dog is vital to the performance of a working dog (General working dog principles) is that correct?
I have always preferred a single discipline. Most departments have dual purpose patrol/narc or patrol/EDD I still prefer a single discipline which is why I do not advocate Live find/HRD dogs. for various reasons,some legal. I actually do put a command on my dogs so they know they are free to take a break,sniff, run around whatever. A release command if you will. My circumstances are a lot different than a SD handler however, and if they are in public , the dog's focus should be on his job. Period if the dog's function is to provide a vital service to the individual. Just me.