At this was written, OWC was including the Impact X-orbing Screen Armor for iPhone 6 Plus/6s Plus with the case FREE.
I’ve been using the NewerTech NuGuard KX for iPhone 5s on my iPhone 5s for over two years. It uses a “Orbing gel technology to absorb and evenly distribute kinetic energy drop test certified to STD-810G U.S. Military Standard”. See my review of the NewerTech NuGuard KX Case for iPhone.
After over two years of use, my iPhone 5s is still humming along, yet I’ve dropped it many a time on hard surfaces. The case has done its job well, and it has (even better) kept me from dropping the phone in the first place, by dint of a better grip surface for my largish hands. This is a particular concern for me when cycling at 20 mph or so, and pulling the phone out of my jersey pocket to check an incoming call.
With a larger form factor of the 6s Plus*, I suspect that drop protection will be even more important, so for my new iPhone 6s Plus, so I ordered the NewerTech NuGuard KX Case for iPhone 6s or 6s Plus to go with it.