I’ve got a Daylight and it’s pretty similar to e-ink.

Without the backlight the contrast is lower than a newer e-ink display, such as on a Remarkable, so you need good ambient lighting. It being actually backlit rather than front-lit is nice though.

I’m not sure why, maybe it’s just psychological, but the Daylight panel feels like a screen, whereas an eink panel feels more like a static surface.

Agree with the above. It's during the night time reading with backlight that the difference from E-Ink is most clear, IMO. There's like a slight sense of depth between the surface and the pixels, if that makes sense, which I don't perceive with E-Ink in the same way. As noted above, "the Daylight panel feels like a screen" in that setting. With ambient daylight though, it is close to the E-Ink feel.

Yeah you’re right, I was trying to put my finger on it, but the slight depth gives it the screen feeling, whereas eink is close to the surface. The Remarkable doesn’t feel like a computer whereas the daylight does.