I preordered the black Crashguard to go with the black phone also. On your 6s Plus, does it make the phone feel wide?I have both the Thanotech as well as the CrashGuard for my 6s Plus and I must say the CrashGuard is the best bumper in terms of durability and protection.
It has a great lip, both front and back, although it's not one of those you want to take off too often as its really tight once on.
I also got the black CrashGuard for my 7 Plus Matte Black. I think it matches well together.