O-L sounds good. There was also a guy that did a video about some cnc lathe work. He's probably not into reviewing flashlights, but damn, he could make watching grass grow sound interesting if he narrated.
I contacted Alice from Supbeam (known from K40L2 group buy) on April 21 about this flashlight, at that time K40M was under development, had only one picture on the Supbeam-s web site and was marked as “2000 lumens” light… exchanged about dozen or so emails, had an agreement about review sample when they become ready for distribution but then Alice went to maternity leave and that was it.
I had done a lot of business with them, and sold a lot of lights for them, and they would not even think of sending me review samples of lights that they wanted to do group buys for, not even an at cost sample.