This is unique. I’m not sure who it’s for, but it’s a positive that companies are trying new things.
I like that the e-ink screen can hinge inward. Our web designer said it would be handy for debugging web page code as you could have the actual code in the e-ink display and the output on the main display
Philips 2-in-1 monitor adds an adjustable E-Ink display for your reading comfort - Yanko Design
I would gladly use it for programming in OpenSCAD/RapCAD — code on e-ink monitor, 3D object on the LCD.
The only way it would be better would be if the e-ink screen was detachable and could be used outside when controlling my CNC.