Thank you for your input and your points have been duly noted.
BUT this case is to protect the whole phone mechanically not cosmetically so as long as it does its job, something it looks capable of doing very well, and I can use it outside without fear of it breaking , then cosmetics are of a very trivial nature.
I have found that scratching on a chassis is usually caused by grit or dirt getting in between the chassis and a snug fitting hard case. If a softer screen protector is put between these two then , again I have found, minimal cosmetic scratching occurs.
Call me old fashioned but the phone is just a tool and as long as you use tools sometimes damage will happen no matter how careful you are.😀