Dr., I concur.
I have one of those fiberglass Travel Warrior cases, which I think is the same as the Otter, but maybe a little larger. Holds 18 AF Canones, keeps them for weeks with no problem. The only thing to be carefull of is to not over-humidify, since the air lock is so tight, and they come with a good size device. These things are perfect for tailgate parties, vacations, weekend trips.