I actually like this design. As some others have pointed out, the two tone has some interesting potential, and might actually hint at what to expect from the final console design.
I'm not worried about comfort because as far back as I can remember Sony has always pointed to comfort as a factor in their controllers, and aside from some super minor things, I've always been satisfied. And, especially they've never had anything that I've downright hated like N64, GameCube, or "the duke".
What I'm really interested in is this haptic feedback. Game news sites seem to imply it's just like the rumble triggers in XB1, but Sony seems to imply it's something more advanced than that. Curious what anyone here thinks about it.