I called Safariland about the prospect of an FNP-45 holster (6004 or 6005) with a SureFire X300 or X200 or anything as a weaponlight. Their response is as listed for the title of this thread.
The representative did say she would pass it on to R&D, which I assume means "never going to happen."
I mean, how hard would it be for them to change the mold a little and make their FNP-45 6004/6005 to adapt to an X300? Probably not lucrative enough anyway.
You could talk to RICK PALMER at CENTER OF MASS and see what he can make you.
He made me a beauty of a holster and I am going to have him make me a positive retention holster with a shroud as well.