Have you considered wiring them to come on with the low beams & turn off with the high, or stay on with both low / high beams and off with a switch?
I did consider that, but it seems a bit complicated. I think I'm going to opt for simplicity, and just wire them to a switch.
I don't do a lot of night riding. I mainly wanted these for daytime conspicuity (spell check doesn't like that word, but I'm sticking with it).