A little update, my Apple silicone case that I put on yesterday isn't working to well with the bottom of the BSE. So I carefully removed the silicone case (which was very hard to do without damaging the BSE) and now the bottom two corners of the BSE are not looking too good. The silicone case is just too tight to work with the BSE. Lesson learned.
I do have a question. I am going to order another set for my plus from BSE, but what is the difference between the regular and 'case optimized' for the front and back? Does the non-case optimized screen protector cover all the way to the edge (including the curved part)? What exactly is the difference in the body 'case optimized' skin?
The back case optimized actually does wrap around the corners a bit. I had it on my 6 and was able to get my Apple leather case on. However it did make the 2 bottom corners of the case bulge a little due to it wrapping around the the back of the phone. Doesn't go around the sides as much as the regular version but it does go pretty close to the buttons. Looks great but I actually just removed it. When I go naked, I could really feel the seam of the skin on my hand. I found it rather annoying! There is a pic on this thread somewhere of the case optimized skin on a phone. It gives you a good idea of how far it wraps around.