Oyster looks like an interesting service, but my interested in them is severely limited until they either come out with an e-ink device of their own or partner

Oyster looks like an interesting service, but my interested in them is severely limited until they either come out with an e-ink device of their own or partner up with someone else who has an e-ink device like B&N or Kobo. I can't read books on a phone or tablet display, and I know I'm not the only one (or Kindle sales would've died out years ago).