Originally Posted by Andrew R Stewart

This last sentence is why Spinergy's Rev-X wheels left the market place. With only 4 spokes a side it took only one pair to break for the rim to have no support for almost 180*. There are documented incidences of a pedal or QR lever getting snagged up in such a wheel (during group riding/sprints and the adjacent bikes), the spoke fracturing and the rider taking a tumble as the rim leaves it's placement WRT the hub.