Problem with the Vision is zero offset and I was not interested in screwing fender flares on my new truck, nor interested in throwing rocks into the windshields of cars behind me either, plenty of yahoos on the highway already doing their bit for the windshield glass companies.
Rickman also requires a 245 or larger tire on the steel wheels which means a 33" plus diameter tire and taller gearing. With the 19.5 tires I am also limited to a commercial truck highway tread which is fine for the pavement but poor for anywhere else.
Fortunately the majority of campers do not weigh 4,000 lbs. dry so 3750 rated tires are more than enough for my truck and its load. I would go with a Class C motorhome instead of a super heavy camper on a DRW truck. Lots of advantages to a fully integrated RV once you get to that long and wide a rig.