Yeah, that’d be mine: Mod: My SupFire M6 "BMF" edition (new beamshots in OP).. The conversion itself is not questionable, it’s the possibility to still open the light by the old method with cells still in that’s the problem. I’ve got an idea to use the tripod mount for a locking device, but haven’t gotten around to it yet. I just don’t open it that way, or put the light in the hands of someone with their thumb in the middle of their hand 
I made a new version of the driver and stuck it in a triple XHP70 light. I haven’t done anything to lock out the host opening method on that one either though: Mod: BMF SRK v2 Roche Edition (Rebuilt into triple XHP 35 HI)
With enough room I could make a cell contact PCB to allow screwing on and off. I’m trying this on another light. I’ve got the parts and PCBs, I just haven’t taken the time to put it together yet.