asymmetric profile rims; hype or awesome?

I've been looking for a nice set of rims for fixed road riding and I've come across asymmetric profile rims like the velocity aerohead O/C is this just marketing hype or in a few years will all rear wheels be asymmetrical?

Ideally you want equal spoke tension, and bracing angle on both side of your wheel. (Have a read around about bicycle wheel dishing). You cant have this on a standard geared rear wheel, because you have a space for a cassette on the drive side, so this side becomes flater. So the wheel isnt so well balanced.

The asymmetric rim moves the rims spoke holes away from the driveside and increases the angle, while doing the opposite on the non-drive side. So this wheel is more balanced.

But on a fixed rear wheel you have no cassette so the wheel is perfectly symmetrical already. In which case an asymmetric rim makes no sense.