That's something that my grandmother, and my mother sometimes said, 'Attached (or joined) at the hip.' I guess that I've said it a few times, too. :-)
While dogs who are shown can still be good working dogs, and working dogs can be shown successfully, I do see a difference between dogs who are bred just to show from show lines, and dogs who have working dogs in their family.
That was true of Tango, and Maggie, our Australian shepherd. The latter was too hard for the people who had her in L.A. to handle, (she was a year-ish old.) but she turned out to be the best herder that people in this area had seen in some time.
Without major training, she kept children away from gates, herded rabbits without harming them - which is a common problem, and was used to herd sheep more than once. You just had to point, and she was off like a bullet. She once kept some sheep from swimming across a river, even though she'd never seen a situation like that before, and she loved the goats, and guarded them.
She was a lovely dog, who we miss a lot, but way too intense if you didn't allow her to have a job. She spent her last night/morning watching over the goats.
Love All Life, Thank You For Posting! :)