After 18 months on the ClearPlex Windscreen protector, I have noticed tiny scratches on my ClearPlex, likely to be caused by fine sands or dirt particle rubbing against it when activated the wiper. Its more obvious in the daytime.
But it does the job on protection against flying pebbles preventing windscreen cracks. Got hit by a small stone few months back and it broken thru the ClearPlex (hit rather hard) causing a tiny hole, but windscreen still ok.

Won a voucher for installation of ClearPlex Windscreen protector thru SG Car Mart, so arrange for installation recently. I am impressed by the attention the installers made in installing the windscreen protector, they were very detailed. Spend slighty more than 1 hour for the whole installation process. After the job done the installer explained to me how to maintain the ClearPlex. Overall good experience.