I compress mine and stuff it in my backpack the night before I leave for a trip. I leave it compressed during the day when hiking, and fluff it out at night of course. When I come home
it comes out first thing, and gets fluffed up and put in a large storage bag where it can sit fluffed up. I find my bags lose a *little* loft in the first year if kept this way, but are pretty consistant
after that, and I don't have too many problems with them.

I personally don't worry about crunching them down to carry them. as long as I don't store them
that way long term.