Quite easy installation (pay attention to cleanliness beforehand), with perfect application. It eliminates 100% of reflections and the feeling with the hand and the pen changes for the better. The image is like comparing satin with glossy photo paper, so it's a matter of taste.
In terms of wear, I had it on a previous tablet for two months without any issues. Here, of course, the tip of the S-pen for the S8 appears to be more sensitive compared to Apple's, but fortunately there are (finally) replacements.

In conclusion, very good if you want a paper-like feel with zero reflections.

edit 15/10/2023: I emphasize the exceptional durability, as ten months later with daily use of at least 1-2 hours (with fingers), the membrane has zero wear! Just occasional cleaning with a slightly damp cloth and it's like new.