My rear mod wheel was radially spoked on one side, and 3 crossed on the other. And they all snapped off at the ends of the spokes, one by one. It was the crossed side which snapped, i think it was because that side was the only side doing all the work.
I wouldn't recommned radially spoking, for the sake of a few grams. i will probably catch you out sometime, when out on a ride.