I have a helmet-mounted head/tail light setup (L&M Vis 360 Pro) that I use for all of my road and MUP riding, day and night. The blinking tail light is 25 lumens and the head lamp runs between 150 lumens (steady or blinking) up to 600 lumens (steady only). I have the option to turn off the tail light, but I never do. Switching on the helmet is very convenient and I vary the intensity of the light and mode depending on light and traffic conditions.
One thing I like about this setup is that I can turn my head to direct my headlight beam away from bikers and pedestrians on the MUP, and conversely towards drivers who I want to be sure to see my presence
If a driver does something unsafe around me and I catch up to them at a stop, beaming a headlight into their brains is a good way to let them know that I care.
Particularly on bright days with comparatively dark shadows, I'm convinced that having tail lights on is essential, and head lights are a good thing too.
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