Has anyone used this Swissol product?

Onyx
Standard wax for all colours.
"The perfectly balanced oil concentration prevents hazing on dark paint finishes, produces a brilliant, streak-free gloss and the high level of yellow Brazilian carnauba wax (30% by volume) gives dark colours (especially black) protection from scratches caused by dust and washing. Use after Cleaner Fluid wax pre-treatment."

I found this on their web site and, since I own a black car, wanted to know if anyone could comment on the part of the claim where it claims to protect from future scratches. Is this noticible? Significant? True?