Tee Emm
I'm assuming that you do see the benefits from having landing lights switched on in VMC, but then turned off in IMC. Now if I flew with a colleague who spent all of his life worrying about whether the landing lights should be switched on or off in patchy VMC (and cycling them on and off several times potentially burning the bulb more...) then I would mention to him the phrase 'distraction management'.
Worry less about the small stuff and please notice the mountain.
(we aren't trying to spot the MiG with our last remaining bit of night vision-Just fly an airliner safely)
Just my thoughts anyhow!