Wouldn't you rather have a 22 magnum type pistol and a big bore revolver for survival than a 22 rifle or a 22/rifle/ 22/shotgun over n under combo?
You'd have 44 magnum, 45 long colt, or 454 casull ammo that would handle large game/bear protection. You'd then have a 22 magnum for defense against people, small game hunting, or whatever other scenario you "survivalists" could think up.
So many advantage here: A rapid repeater, lightweight, more ammo for less weight, less bulk, ect.
Twin handguns......anybody agree?