I have tried it. Not on the Renegade, but other guns. I actually do better with my present setup.

I understand how a peep works, but I have a theory why it doesn't work well for me. Your brain will automatically center the aperture without any input from me. However, to do that the eye still needs to see it. Even if i'm no conscientiously looking at it. Anything that close to my eye is extremely blurry. I'm thinking my brain is having a hard time centering the aperture when it can't see it clearly.

I could be completely wrong on this, but I seem to be more accurate with my present setup. I will admit that a peep does clear up the target, and front sight some, but I still have to look through the aperture which puts a haze on everything even if the detail is sharper. If that makes any sense to you.