Nope...never! The issue is that if you start swapping the ground and neutral you make the ground wire a current conductor and can have parts of an electrical system energized that should not be.

We may only tie the ground and neutral together in the panel and nowhere else in the whole electrical system.

The ground conductor is normally never a current conductor (except for slight leakage). Ground and neutral are both grounded conductors that perform different jobs in an electrical system.

I've been on commercial/industrial service trucks where I've seen a lot of shady stuff with grounding, though.