Regarding the scratched screen. Does Passport have any recommendations on how to protect the device from further scratches? In the OP you mentioned that the curved screen makes it difficult to stick on a screen protector. I haven't really played with those things, so I don't know why that would be a problem.
A big no go to me is the batteries. The wallet itself is rather expensive + you are going to need a new set of batteries quite often. You only got 4 hours out of the ones that came with it? That's really bad performance-wise. The money you will spend on purchasing new batteries will be more than what you paid for the HW.
I see from your post that the second version will be shipped with Li-Ion batteries. Hopefully that can improve the stand-by time.
If they can fix the insufficient battery life, lower the price, and manage to create a HW that won't suffer major security issues and vulnerabilities in the future, this would be something I would consider purchasing for long-term storage. At the moment, it isn't.