I've laced 32h rear hubs with semi-radial patern ( 16 2-cross on the driveside and 8 radials on the non-drive) with a 24h rim, Several thousand miles later, still sweet! Matching front wheel uses 36h hub and 24h rim with balanced 2 lacing. Sometimes I have used the larger hole count on the rims, and filled the holes I didn't use with cute little plugs just to finish the wheel I wanted at the right cost.