There is still market for both simple and upmarket sleeves. I use an inexpensive Swiss Gear (Wenger) zippered sleeve for my Kindle PW and, before that, for my Sony 650 --
http://www.amazon.com/SwissGear-LEGA...qid=1382465323
Styling is very plain but it has proven to be small, light, protective and durable (several years old now and still looks fine).