Ok, let take a look at using a double ender with two loops.
No big issues here when the light is either stowed (light off, light head clipped via handle, cord tucked) or when the light is temproarily clipped off pointed down (light on, light head clipped by loop at cord). The issue is when the light is in use and we want to clip if off. While in use we can do three things with the double ender.
1. Leave the double ender attached to the loop on the goodmand handle.
2. Leave the double ender attached to the loop on the cord.
3. Remove the double ender from the both loops and clip it somewhere else.
Let's look at number 3 first. An argument for this option is that it streamlines the light head and removes the possiblity of the double ender being entangled. But where do we put it? Right chest D-ring? Still an entanglement hazard? Left chest D-Ring? Way to busy already. A pocket? Not very convienent when you want to clip your light off.
Now 1 and 2 would still require two hands to switch the double ender depending upon where it needs to be. In addition, the possibility exists to drop the double ender which would create a problem.
In summary we've increased the complexity of clipping off a light head by trying to solve a problem that doen't exist while introducing additional problems.
Now what's your argument for using the double ender.
Jonathan