I had one fitted a few thousand miles ago as my Plus 4 has the ground clearance of a snake's belly.
It certainly has seen some action as the many scuffs and scrapes testify.
Peace of mind is a big factor for me, I'm sure it prevents damage but even if it doesn't, when I hear (and feel) that dreaded scrape I now feel just a tad less worried.
Last edited by scratched; 21/07/18 07:11 PM.