On Mac it's magic and seamless, just like with the iPhone. They have a special integration with the volume menubar item, to make them particularly easy to switch to.
On Android or Windows... they're bluetooth headphones. Experience is like any other.
I seem to remember those has pretty bad battery life.
I've used my AirPods with a Mac that didn't have the latest software (so they were just treated like any other Bluetooth headphones) and something else and they work just fine. You don't get the double tap control (I think) or the auto pause? (not sure) but they sound just as good. If you want really tiny headphones that are easy to charge they'd be a good candidate.
But the experience on updated Apple products is amazing.
On Android or Windows... they're bluetooth headphones. Experience is like any other.