I wouldn't say I do a lot of night time driving, but possibly slightly more than most as I do like to use my cars. I've had occasions, such as on the way back from French trips where I've ended up driving through the dark for an extended period, and it'd be nice to be able to do extended trips without worrying about what the battery is doing. If it was a nice original car with working 6v I wouldn't mess around with it, but as I'm starting from a blank canvas I'm leaning more towards usability than originality.
Having said that I realise that LEDs might be a good compromise, so long as they don't cause overcharging issues.
Having said that I realise that LEDs might be a good compromise, so long as they don't cause overcharging issues.