It took off the orange reflector that was stuck to the guard (with double sided tape) and I had cream coloured paint marks (from the gate) on the camper but there was no damage whatsoever...
The paint from the gate polished off of the powdercoated surface on the trailer and I ripped off the reflector from the other side so it looks even on both sides

Cavalier is one of the fully Aussie made brands that can be had for well under $10K on the second hand market depending on age, condition and features. A great locally made product at a good price.
(Disclaimer: Challenge Camper trailers bought Cavalier 12 months or so ago, so I now have no idea what Challenge are doing to the Cavalier brand?)
Dan.