When we first stated traveling we were in a 17 foot Casita
. These are rugged little trailers, and we took this one to Inuvik, NWT
500 miles above the Arctic Circle in Northwest Territory, Canada and all over Alaska on our first trip in 2005 doing 2000 miles of gravel road in the process. We were gone for seven months and had a grand time towing for 19000 miles. We were towing with a four cylinder Chevy Sonoma mini pickup with a five speed standard transmission. We had done some dutch oven cooking with an old and cheap and very heavy cast iron beast before the trip. We loaded up the truck and the Casita and went to the public scales. The trailer was 800 pounds over weight and the truck was 700 pounds too heavy back to the drawing board. One of the weight reductions was this aluminum cooker. We also put overload springs on the truck. When we left we were down to only 1200 pounds overweight.
An aluminum dutch oven cooks pretty much like a cast iron one. The biggest difference is that after you remove the coals they don't keep the food hot for as long as cast iron, and they are more difficult to clean. But they do weigh a whole lot less. All things being equal I would prefer a good cast iron one, but weight is still somewhat of an issue, and we have this one. So we'll continue to use it. Incidentally, the only time our new rig has been weighed it came in at a little over 20,500 pounds. So we are a bit under our gross combination vehicle weight rating of 21000 pounds.
We don't use propane outside. We are really traditional cooking with regular charcoal and hardwood charcoal. We burn gas in our little Coleman stove.