Does this mean you got your battery issue sorted out??
Is the 10" one big enough? I bought a cheap memory foam case which works well for me. Like Ivan's it doesn't advertise being waterproof, but I would expect it to protect my EE up to dropping it in a river or something.
I didn't check to make sure it would fit, but something like this
http://www.amazon.com/CaseCrown-Doub...6073698&sr=8-2 should work. Even says it's water resistant!
Good luck!