Mavic Ksyrium Tubular rebuild?

[HillRPete]

I have a Dura Ace 7700 or 7800 aluminium front tubular wheel, and a Ksyrium SSC SL rear tub left over. And a Shimano 20h straight pull rear hub.

Is it possible to rebuild the Ksyrium (20 wide alu spokes) with regular bladed spokes on the 20h Shimano rear hub, so they can be used together, with decals removed?

My biggest concern are the Mavic nips, don't want to take it apart before knowing they will take regular spokes. Or I can use regular nipples with the Mavics. Thanks.