Different people same debate
Good point though on camp comfort and being warm enough to socialise. I used to lug polar fleece jackets but found them very bulky and weighty for the warmth then when walking with a very experience walker was introduced to a down jacket a few years back. It is now my evening wear and pillow also my emergency shelter (in conjunction with rain gear) if the wheels fall off. Sure I could dump the jacket and retreat into a sleeping bag once the sun goes down but for me the weight is worth comfort and ability to stay up.
Ok there is nothing wrong in getting the lightest down jacket you can afford but there is a huge price premium between a 500 and 850 loft one and also some light weight fabric might not last the distance. I have a 500 loft Kathmandu one that has very light material and a Mont with Hydronaut, a robust casing, and 700 loft. They are about the same weight but the Mont is a so much nicer jacket. Tempting is a 850 loft jacket with a light casing such as the WM ones but not sure if I could handle it been damaged on a trek meeting a call of nature. I did see a knock-off of the WM jacket but poor fit, crummy finish and flimsy casing material and hyper expensive price put me off so for a bit more weight I am happy with the Mont.
At the end of the day it is a personal choice and robust debate is a good thing as we can all learn something from a different view point and this weekend I will be trailing lighter rain gear. Might work well, might be a disaster but at least means I can accept or refute what works best, at least for me
Cheers Brett
"lt only took six years. From now on, l´ll write two letters a week instead of one."
(Shawshank Redemption)