Haven't damaged mine (yet). Our X19H has two triangular "skids" on the back frame rails to protect the plumbing in case of touchdown. Your 23 probably has the tanks in the same place (same bath location), did Jayco not install the skids on your model?
The only place I would worry is larger speed bumps, or deep potholes that can cause an obstruction to get up between the wheels and the skids.
2011 Jayco X19H (purchased 2015)
2008 Jayco 1007 PUP (purchased new, traded for the X19)
2012 Chev Traverse LT with TP