I have progressives and leave them on at all times, and adjust the ocular lens of my scopes accordingly. I live in the boonies and shoot (multiple times a week) from a bench and offhand when hunting/plinking. Sometimes these "shooting incidents" are rather spontaneous, like when certain known damage causing varmints pop into view on my property. I would go crazy playing "eye glass" roulette.
I have zero trouble adjusting my scopes for perfectly clear vision with my progressives. Your mileage may vary.