Cheers on all the replies thus far
For the cleaning bit - yeah, I'm going to use plastic lens cleaning cloth for the job. The fingerprint is pretty nasty... it's a gigantic thumb-sized oil mark bang in the middle of my reflector. Haven't quite figured out how to open the light though... it seems SF is using a non-standard sized hex screw for the body of the Beast as
none of my hex screw sets have an exact matching size. Go figure.
As for the Polarion... yeah I think I'll give the PF-50 a shot, if the seller has a PF version that is. Still can't get used to the design of that handle on the PH...