There have been some dyno front lights where they emphasized side lighting. I'm thinking I even had one, a supernova maybe. I had a battery light from Planet bike that had side lighting and they still make a dyno version with side lighting that still doesn't seem to have any cutoff. The side lighting on the blink mode of the battery light was incredibly annoying, and every time I tried to turn it off, it started blinking. I think that the headlight is one of the least effective spots for side lighting.