I love my transflective MIP Garmin Fenix watch, but it's not nearly as high-contrast as my wife's Kindle, which uses a reflective MIP e-paper display.
I would be an ideal candidate for a rePebble if I were not as happy as I am with my Garmin - though with their recent changes to inReach plans, crazy prices and lackluster features on the Fenix 8, and trend towards AMOLED displays (away from their roots, chasing the Apple watch market) they're not looking as amazing as they once did.