I received my large sleeve, with the shoulder strap, a week ago. I love it. It is perfect for grabbing w/my lunch to head out to the park. I can carry my kindle, well-protected, separate from other items I'm carrying and have easy access to it.
My only quibble is with the price. After shipping, it was $54!! I don't regret the purchase, because it really is perfect for my needs, but, geez, that's a little steep.