" nearly everything threads the same these days."
It's the "nearly" part I'm not sure of. I've never seen Falcon FW's for sale other than when installed on a Target or Xmart type bike. Since they are from China, I wouldn't be surprised if they had a proprietory threading or whatever to be used with a "Falcon hub". I know Park sells a removal tool for them, which probably indicates they are worth removing I wouldn't think anybody would remove one, if no "available" FW would fit.