I tried using a Dasung e-ink monitor, then I asked for a refund because I cannot review PRs on it. Even though it is a color e-ink monitor, I could barely tell if a line of diff was an addition (green) or a removal (red)
Kaleido color eInk is a dead-end. The displays are too dark to use in anything but direct sunlight. I regret purchasing such a display.
However, black and white eInk is great to use in any well-lit environment and doesn't need direct sunlight. However, the lack of color can be fatal for many workflows.
