We've used the stable stix in the drive way @ home and posted pics here, this is the first time we took the camper off the truck in a campground because they have paved drives @ brookville, they worke...
I think that most of us lower the camper down as far as possible on the jacks when using the TC off the truck. I doubt I would ever leave it up like it is in your photo even to just store it let alone use it.