I like the Energizer Romeo light, but its pocket/molle clip keeps popping off. It is the kind of clip which snaps around part of the flashlight body.
The fix is simple and applicable to other flashlights which employ a similar clip. Place a small section of bicycle inner tube around the base of the clip. That secures the clip to the light.
The first photo is the original light, before adding the inner tube. The remaining photos show the inner tube section installed.