You bring up the other reason I'm not 100% on board with that mounting method... And yes, I don't have an optic (yet) which is another thing to discuss entirely. Leaning towards saving up for a PRO, or maybe a vortex 1-4 with illuminated reticle
I agree w/ "cmshoot" on this one.
Most rifles have red-dot optics anyway only using traditional sights in a backup capacity so sight radius isn't a big issue.