When I first saw this I thought "WTF"! I understand that the thinness of the phone dictates this but that's pretty unconventional. After thinking about it, it makes perfect sense. When in the car I keep my phone in the cupholder so the placement works perfectly. It also works perfectly for horizontal docking too.
After seeing that the GN has the headphone jack on the bottom, I am now saying "WTF"! to that.