If, as you state, the "boxes are just bolted on" then I would think that it would be a rletivly easy removal job, but I am ignorant of AF campers.
With the NorthStar campers (my frame of reference) makes my camper for long or shortbed; the floor structure will work with either one. My model can have no skirt storage (long bed), storage integral to the body (re: photo) or bolt-on (ergo, bolt-off) storage boxes- these latter two for Short bed use. If the AF is similar to my NS bolt-on version than it should be easy. If it is integral similar to the photo then some body work will be involved. If your model side skirts are strictly storage (i.e. no batteries or other major components) then it would be up to your body work skills.
Can you post a photo of your specific camper?
