I use glass exo-terra tanks to house a pair of BP's that I like watching cruise their homes under the red light at night.
Initially humidity was an issue until I started mixing exo-terra plantation soil or jungle soil(which I believe are very similar to eco-earth) in with the repti-bark that makes up the majority of the substrate.
I found that cutting a few pieces of Plexi-glass/Lucite or any similar substance and drilling a couple finger size holes in it allowed me to cover any number of the 4 screened parts of the top.
The mixture combined with the controlled moisture loss means I now only have to mist 1-3 times every 2 weeks unless a snake is in shed.
The substrate also does not seem soggy ever.
What type of habitat do you have?
THIS is what I'm talking about! People give up on glass too easily. I like your ingenuity!