Finally got my H2O! Thanks for all the posts that helped me choose my accessories. Here's the case and sleeve I got and a few pictures to see how they fit.
Case:
http://www.amazon.co.uk/gp/product/B...ilpage_o00_s00
Sleeve:
http://www.amazon.co.uk/gp/product/B...ilpage_o00_s01
I can confirm the sleep/wake works and doesn't put the reader to sleep when folded back. It's much easier to wedge the ereader into the case compared to popping it back out. The botton left corner comes out almost too easily and the top left corner needs a lot more force. You can see this is due to how the plastic frame is designed. Overall I would say its sturdy and offers adequate protection when the lid is shut.
With the reader in the case, it fits very snug into the sleeve. It slides in and out with a nice amount of hold. The width is a tight fit and there isn't as much padding on the sides so I think that's where it would be most vulnerable to shock or compression. Height wise there is about an inch of extra space once the ereader is pushed all the way to the bottom however once zipped shut it won't budge, even when it sits off the bottom. It puffs up nicely on the front and back where the foam bubbles are located underneath.
It's early days but fingers crossed it lasts
