I received both Niteye and as indicated by centaurus3200 there is a physical polarity protection on the R26 ( not the R25, simple spring ). The good news is that it is easily removable, just be careful with the driver board under it. Check your light when you’ll receive it, at first even my protected Pana were not working.
No, the protected pana is button top, but the polarity protection doesn’t seem well designed.
I received the clip and with it in place you really have to tighten to make contact, I think I will run the light without this plastic pill.