Let's extend the bed to put the spare under the truck so it can get banged up, punctured and/or mangled. We can even up-sell a spare tire skid plate, Genius! It probably needs one anyway with that overhang. I know I would not want my spare in harms way, because the day I would have to use it is probably the same days its trashed to hell and won't hold air. The good side is there are plenty of Jeepers around to bum a wheel/tire from.
I suspect anyone who plans on wheeling these will have to rely on a pretty beefy skid to protect the underside of that overhang or will remove the spare from the underside and use a bed or tailgate mount instead.