eh a dry box is supposed to de humidify the air in it...does it matter wat the air outside is? i juz put my cam in the box daily
my main workhorse lens is permanently attached to my camera....i mean...cant be bothered la...the only covern is if ya lens is a v heavy one...then u anyhow put and prolonged strain can "injure" the lens mount..
if you use your camera everyday, you really do not need to stroe it in a dry box. kmolds need 2 things in orde to grow, moisture and still air. If you are using your camera all the time, the air movement will be a deterrent to mold growth. Actually, it's not unheard of that mold can grow inside a dry box, where the air is still.
If you have a room that is airconned all the time, I just leave the camera in the room. Just make sure they are not directly in the path of the cold air , you don't want to get your equipment so cold that once you take it starts condensation.
normal a/c's maintain low humidity values so you dont need a dry box if the space is always air conditioned. there will be some condensation after you take it out, but that should not be much of a problem.