I actually use both….IMHO the weak link in a permanent tie down system of any kind are the eye bolts on the camper…..so I add four 1500 pound ratchet straps that are attached to the pickup frame and the top of the jacks… kind of a suspender and belt combination.
I would not have any concern about using only those straps to secure the camper when being transported. I use foam cushioned adhesive on any contact point to avoid any sawing on the straps.
As my loaded camper weights about 1450 pounds I am very confident that it will stay on under nearly any circumstances with two completely independent tie down systems.
