The problem is that unlike a phone or a tv these will probably be on for the whole workday, so 8h+ with little change to what is displayed and probably at a high contrast. The burn in will probably be an issue.
What burn-in? E-ink is a passive technology, it's not "on" like liquid crystals that have to constantly be pulled into a specific configuration by applying fresh charge, and will settle in that configuration over time as they find the lowest energy state amongst themselves that then has to be overcome with a higher charge.