No, but I have a level 20 Chansey with Pound/Dazzling Gleam that I hatched and never powered up because "Dazzling Gleam." Now I'm anxious to place it in a gym and see what exactly one has to attack it with to beat it before timeout.
I'll have to be sure and choose a gym that already has a few of my mates, cuz once Chansey goes in there'll be no more training that gym up haha