I can maybe see it happening (nosing over) with a much smaller, lightweight camper, but not with one the size of mine or Raften's. The 1121 weighs around 5K lbs, and 75-80% of it's weight is behind the front jacks.
Some member here who's smarter than I am with making these kinds of calculations determined that it's just not possible to put enough people in the cab-over to make the camper tip forward.
Wind, tornadoes, earthquakes, and energetic activities in the cab-over aside, I don't think there's much to worry about. I don't think having the nose a few inches higher vs. level is going to matter On my camper, that is. Everyone should make their own risk assessment.
:):)