This is something I don't understand. What's the difference between them hanging in a humid hide and hanging in the enclosure that's got the same humidity? Wouldn't they still be at risk of getting the scale rot with constant enclosure humidity?
Do you know how you make a humid hide?
You fill a hide with a wet substrate. It isn't the humidity in the air that is the problem its the dampness of the moss or whatever you use to make the humid hide that is the issue.