I really enjoyed looking at the Japanese fashion scene during our trip. Backpacks, hiking boots, fox-tails and other kind of old rustic Americana were popular - but kind of re-purposed into city fashion. Like the idea of a camping getaway is stylish, instead of incredibly geeky like I used to feel as a kid.
Seeing so many Japanese girls into vintage Davey Crockett made me actually really want to go hiking with my dad again!
But if you are looking for new luggage, you should definitely check these out; I think they are pretty sweet:
SteamLine Luggage [site]
Here are some places you can buy designer luggage in Japan - vintage style, with complimentary fox-tail!