Thanks Blitz for the perfect example.
The GSD did not come from nor was it created to do IPO.
First the breed and then IPO.
IPO will tell you something about the dog in front of you not guarantee what it will produce.
IPO represents (from various different sources) less than 10% and more like 1% of the GSDs in Canada and the U.S..
You have something against Dogs for the blind. I don't think they do IPO first.