Tough to find man.
I.ve found Fobus paddle style holsters for FNP. Thats it for kydex. As mentioned the fnp holsters fit the fnx.
Or try SharkTac
http://www.sharktac.com/
*Edit... Onething I just thought about.... It's roughly the same dimensions as a USP (minus the bevels on the slide) have you tested any USP holsters for fit?
I like myBDS Tactical universal thigh holster (if you're willimg to take the nylon route, theyre on sale cheap right now!)
http://www.bdstacticalgear.com/cat-holsters.cfm