Been without a screen protector since I got my phone on October 26 and no micro scratches at all. Only using a TPU case. So your mileage may vary.
I get that the OP was just trying to help. I just feel if your going to review something on a public forum you better know the answers to the most basic of questions. Adhesive only on the edges and a dot matrix pattern are pretty basic things to miss. Some may have purchased this based on his review and will be really pis*ed when it arrives.
You guys that want full adhesive and a glass protector that will likely last longer than the phone, really need to wait for the WhiteStone Dome Glass. I have this on my Note 8 and you can't even tell it's here. It comes with a liquid glue called "Loca" as well as a UV light to cure it and a jig for the phone that makes it very east to install in a low dust area.
Below is a video I found on YouTube showing the application. I'm expecting Amazon will have the Pixel 2 XL version around the 15th according to WhiteStone.
It's so amusing to see how fast people are to jump at others throats. I feel that he genuinely was trying to help and thought there was full adhesive. The higher quality glass protectors (Zagg as well) it's hard to spot the dot matrix unless it's under certain lighting conditions. I remember Mime from back in the day and they do have excellent feeling glass and excellent customer service.