How do you like the LD20 in this application? I've carried mine in security work long enough that the holster is pretty much dead, and I was thinking about either replacing it with a different light and putting it on the bike, or buying a similar sized Fenix for the bike and using the new one's holster. The head-twist mode switching strikes me as a potential annoyance, but I guess if you're not using Turbo mode at all it would work fine.