Great article to get our attention, especially with reference to a FWC camper adding to the truck's overall weight.
I just picked up a Toyota jack on Ebay for my second jack for $56 shipped. Model 09111-35150 - 1500kg - 3310lb - Earlier 4Runner.
Truck weighs 7000lb and dry camper weighs 1827lb wet. I haven't weighed the rig on a CAT scale, but would guess the the majority of the unloaded weight of the truck is with the motor up front. With food, beer, passengers and a dog I'm guessing our total weight approaches 10,000lb. GVWR for the RAM 3500 is 11,000lb.
These mechanical Toyota jacks are great, and my Tundra jack has been deployed a number of times.. They collapse to 9" but extend to 16", w/o any hydraulic fluid to leak out. I had a Zing neoprene sling (for a DSLR) that worked perfectly to cover the jack, and I was able to fit it under the front passenger seat next to the RAM OEM mechanical jack. I also carry a Hi-Lift jack, mounted to the Hawk designed and welded by Camelracer.
Those Humvee scissor jacks look like another useful alternative. Thanks for the informative article, Jonathan.