I agree with you on the case factor. It was their idea to incorporate a case so I am excited to see what they come up with.
Molly, I just created a key guard for a 4 location GoTalk Now app on an iPad using the Volksswitxh method on a Thingiverse and it works great! A student broke it on the first day and we were able to reprint it by the next day and it has been working well. I have created LAMP 84 Keyguards in the past using his method with great results.