chahahc After a few months I'm still very satisfied with it, so much in fact that I'm not really using my Dasung Paperlike anymore. Only on days when the sky is very deeply overcast with gray clouds the experience has been subpar, but even on most overcast days the monitor is very usable as long as the monitor is slightly angled so that it has it easier to reflect daylight or overhead light. What also really helps is to have a keyboard shortcut handy to increase gamma (setting it to 2.0 works great in most situations), but from experience this is really only needed if you're watching movies or playing games.
I got used to white looking metalic gray and don't notice it all too often really. The brighter the environment is, for example when the sun shines, the more this issue is negligible though. If you can get direct sunlight onto the monitor, the picture looks pretty comparable to one from a regular monitor in my opinion. Finally, the internal settings for the monitor seem rather unfinished and operating them with the buttons being very hard to reach from the back is annoying, but gladly you really never need to operate them after checking them out once (or ever) or if you want to increase brightness/gamma if you have the monitor hooked up to devices which don't offer these settings themselves.
Lastly as I believe this is very decent product especially for people with light-based eye issues, I wish that the price comes down and they offer more sizes, especially ones which are more suitable for office environments, because at home I can set up conditions such that I can sit far away from a 32 inch monitor, which of course is not possible if you have to share a space with other people.
Haven't watched the video from My Deep Guide yet, but interested how other people perceive the monitor.