Pretty much 100% fashion. The Galaxy S6 itself is completely unimpressive, but the S6 Edge totally has this thing about it that makes it look really awesome. I'm really into 3D and 2D design stuff, and it's definitely one of the most beautiful pieces of electronics I've seen. I used to have an iPhone 4, so I'm used to taking care of fragile devices (granted, it's been a while since I've had to do so).
If I wasn't getting the S6 edge, though, I'd probably get a Note 4 or wait for the Note 5. Or maybe I'd jump ship altogether, but regardless, I wouldn't bother with the normal S6.