I'll have to agree with you on that, I am pretty clumsy. Though the first time it cracked it only fell about 30cm to the floor and landed screen up.. that sucked.
I've had around 6 iPhones and I have never smashed a screen, also isn't Android a type of Operating System? I don't see how having Android will save your screen since it's not hardware related...
http://puu.sh/dSzzF/ec9161bfd2.png
Material Design is looking good! Working on implementing it in my apps as well.. quite frustrating at times. All the different API levels make it near impossible to give the same look and feel on all devices. Mehh, so many API specific 'hacks' needed.