You know that Warmoth will prep a neck for their own locking nut, right?
http://www.warmoth.com/guitar/necks/necks.cfm?fuseaction=stringnut#lock
If I wanted a Floyd Rose, I would absolutely go this route. You could use the Schaller/Rose nut that Warmoth routes for and a different bridge unit if you wanted to, a lot of people like the Ibanez locking whammys better than the OFR's for example.