I use headlamps for hunting, fishing and farm chores. During winter, most of my farm work is at night before and after my day job. I use white for general work and some fishing, but find red to be the most useful for hunting and livestock chores. Animals can't see in the red spectrum (hence blaze orange) so I can work around them without blinding them, or walk out to my hunting stands without spooking game. A white flood is useful for working on the machines in the field, and other general purposes. I rarely need a long throw.
I will be evaluating a prototype white/red headlamp from Lucifer Lights in a few weeks. I will put it through the paces ranging from farm chore to elk hunting in the Rockies, and will write up a review for y'all.