In 38 years of hunting, of which I started with open sights, I too admit that I like having open sights on a rifle, and using QR type mounts that I can take off the scope if it should fail, or should I be tracking wounded game in thick brush where I prefer open sights to a scope.
And yes, I have a number of rifles with clean barrels. And yes, a spare rifle or sighted scope in QR rings are great back up strategies that I too have used.
I hadn't needed to take the scope and revert to the irons out of need due to scope failure until this spring...so yes, it is rare, but yes, it can and does happen.
Better to have and not need, than need and not have.
And as long as my eyesight will allow, I still enjoy shooting irons for hunting and target practice...and to keep the skills sharp!
back up optic or open sights is always a good idea and never left home without one kind or the other.





















































