I think it should be OK for most of our models.
I don't think they will "tip" forward.
If you have a small camper, with a really long cabover, like our Falcon Model (5' camper body with a 4' cabover, then YES, the camper will probably tip over forward if you were up in the bed area with a couple of people).
But with a larger camper like a Hawk, Grandby, or Keystone Model, there should be no worry of the camper tipping forward if you are base camping out of it on the ground.
It might be a little more of a concern if you just have an "empty" shell model, but if you have a loaded camper with the sink, stove, refrigerator, furnace, couch, and all of your gear, the camper has enough weight not to want to tip forward.
Some of the cabover bed in the FWC's is over the front wall of the camper as well, so that people sleeping there won't be adding any weight forward.
We set our campers here in the showroom, and campers we take to trade shows on wood platforms. Then open the campers up and let people get in and out of them all day long.
As long as you are cautious not to have a big party of people in the cabover bed, the camper should stay put for our normal camper models.
Hope this helps.
Happy Camping.
.
.