Lance specifically states in the owner guide not to store the camper on jacks. I asked someone at Lance and they said that the camper was designed to have its weight supported on the 4 jack stands. Makes sense as the framing is going to be stronger and cradle the weight. A jack stand is going to push up against a small area of the base of the camper unlike a truck bed that sports the floor 100% uniformly.
Once lowered to within 18" of the ground the jack stands are very stable. We added Wobl-stopprs but it was not really necessary.
Space is at a premium with a truck camper rig. No point in using it up needlessly with a bunch of jack stands that add no needed support and have the potential to actually cause damage to the camper.