Finally tried all the battery adapters with my Logan. All work great. This light could replace all my lights. Of course what fun would that be.
I did notice that with the moddoo clip installed, the QTC specific switches can barely reach max output in the switches travel. With the basic momentary switch with end removed there is plenty of room for full range output selection even with the head unscrewed quite a bit. Something to consider if your going to be adding a pocket clip.