Do you have space in your pack or is it very limited? Do you want to use it after Nepal? is weight a big issue?
Down jackets offer a great weight/compression to heat ratio, but are **** useless if it's damp (even on a relatively dry day in scotland it will lose a considerable amount of it's heat retaining abilities). It's obviously not an issue in Nepal.
If you have the space, and want something that will be useable for back home too, try a synthetic fill. I climb with a Redpoint in my pack for when I'm dug in to the side of a mountain about to take my turn to belay. I wouldn't want to be caught on a hill in scotland with a down jacket.
That said, if you still want down, look at Rab and Mountain Hardwear.