It shouldn't really matter much for a pet/guard dog that is to live in the home, if the pup is confident and has abundance of drive, and is done correctly.
The thing is that the average dog owner is probably not going to know how to do that correctly with high caliber working dog.
Happens all the time, people stifle the pups, and the dogs are not as "open" or "free" as they could be .
E-Dog - 2012 WPBTCA National Championships
The time when screech owls and Bandogges howl and spirits walk and ghosts break up their graves.
Act I, Scene IV of William Shakespeare's "King Henry VI"