I have a Skinomi TechSkin for the screen on order from Amazon so that will complete the protection for the iPhone. I have had some rotten luck with SGP and other screen protectors. There always seems to be that one (or more) piece of dust that gets under the protector and ruins the installation. I have tried everything, including the old "shower steam trick", to no avail. I am hoping the wet installation of the Skinomi's helps make the process easier. I rarely use screen protectors on my iPhones but with the Caze having no front lip, I think using one would be advantageous since I like putting my phone face down, especially during work meetings.
As I mentioned in my Caze review, one of the downsides of this extremely thin bumper is the lack of wired or accessory connectivity aside from the default Apple charging cable. Even the JBL speaker dock I tried in the Apple store today did not fit with the Caze on. I am not quite sure what type of desktop charging solution I will settle on but for now it's the Apple cable.