I'm looking for an iPad case where you can use the iPad while in the case, with the strap over your shoulder or around your neck. For example, while walking around (using an astronomy application at night, for example), so that you don't accidentally drop the iPad. It would be handy while walking around in a city on vacation, too (I know I'd be asking to be mugged, but I don't go to places where that is very likely).
I've seen the Simplism one, and am not impressed by the comfort of the strap, and possibly the security of the iPad. I also saw one by Acton Treadway, but it did not seem right, either.
I've seen another for disabled people where the screen is completely uncovered, and I don't really want that, either. A flap I could fold back or something would be good.
Any recommendations? I'm not terribly concerned with price, just quality, and that it does what I want.
I've done a lot of google searches, but it is hard to exclude cases like messenger bags, etc.