For some reason this makes me want a toggle that:
* Moves slowly to about 75% of the way there while you hold the touch/click
* Snaps the rest of the way on release
I’m not sure what this could mean in terms of UX though. Maybe the setting is actually applied or saved at the end.
Or it could be part of an “are you sure?” dialogue. The setting is applied as you hold, but you can hit escape to undo before it snaps into place.