I dont see a beautiful slate black iPhone 5, I see a scratched up slate black iPhone 5.
I agree with most here, I dont think it looks good. And this makes me nervous to get rid of my 4S next fall when I can upgrade.
If I do get the 5S, it's immediately being covered by a protective skin and slapped into a case forever.
I understand that Apple has amazing looking products, they really do have some of the best hardware. But I think making a phone aluminum and making the aluminum susceptible to scratches is sort of annoying. You can still have a great looking phone without compromising it's durability and beauty (iPhone 4/4S)
I like the glass, despite it having the ability to crack, I can easily replace the back for 10$.