Has anyone done the Single or Dual rear wheel conversion of putting 225/19.5 rims and tires on in place of the standard wheels and tires on an F-350?

I am curious if the claims of tire life, handling, stability, and drivablity improvments are true. It is an expensive changeover on just hear say. A different truck is in my future and by looking at the tire ratings I may able to get by with a SRW F-350 converted to 19.5's as opposed to going with a DRW F-350. Any real input would be beneficial, thanks.