I also have the KLC and I love it having upgraded from a Libra H2O, but you do lose some crispness compared to a black and white screen. Basically you need to activate the light quite a bit more often/sooner than before, but the color is nice, USB-C is a big bonus, and the pen support is at least interesting if not a pretty big opportunity (though I use a Supernote so I don’t really need that feature).

I haven’t really suffered too much in terms of battery life or enjoyment from having to light it up more, and I wouldn’t say there’s been a significant screen door effect on mine. The color is a little pale, but I find it reminiscent of newsprint and comic book coloration in a charming way.