Several years ago I got the FF4 HID light and was impressed by it and even posted a thread about it compared to my Deft X, though I can't seem to find where that thread is here in CPF now.
Edit: This activity is cancelled.
I am interested in one with the 8x18650 extension. The runtimes would make more sense for that.
I've been keeping an eye on this light. The tint is magnificent. You can find pics showing the beauty of the beam much better than the one in the OP. For the size of the light, 10k lumens with 2000m throw is something I doubt LED flashlights can achieve in another 5 years!