The problem is when your in a solid shooting position especially prone or sitting and standing your looking through the upper corner of your lenses.I haven't tried prone shooting, but you don't have to move your head much, the focus changes right at the center of field of view, i.e., the horizon,
so just a tiny tilt up or down get you from infinity to the front sight.
Plinking off the bench or just screwing around I can get by with cheaters but not good for accuracy.
If it works for you its good.