Jeff you can carry a red dot and have flip up irons a lot easier than carrying extra guns.
LOL, anything I can do wiht a dot I can do with irons.... but magnified optics can trump that.
I carry a gun for the job at hand, generally no spares.. LOL. they stay in the safe.
I could see the use for the qd mounts though for when the zombies get here. Grins.