Just quietly, I think I'd prefer a slight aero advantage to a large lateral rigidity advantage...

I came across a very good argument not long ago that lateral rigidity is almost entirely superfluous for a bike wheel under normal riding conditions... You really have to try to induce significant lateral loads in a wheel; holding the bike vertical and hanging off the inside while cornering, for example.

Most of the time the wheel is tilted to take cornering loads at an angle quite close to its plane.