I ran peep/receiver sights for many years on my short range deer rifles. I had cataract surgery and could no longer use them as I couldn't focus close enough and they were just a blur not enough definition to discern the opening and had to switch to scopes. I wish I had done it earlier, they are faster and easier to see obstructions, branch and weeds between the rifle and target. The only drawback is in heavy snow or rain, where I could just blow the snow off the receiver sight, that will fog a scope and they need to be cleaned with a cloth. For aesthetics I find the receiver sight really looks the best on a lever action even my Savage 99's.
I ended up selling off all my collectable rifles that couldn't mount a scope with out D&Ting them, mostly early Savage 1899's and 99's that weren't D&Td from the factory.