Mesh cages are like reptariums. Chams can get their nails stuck in the mesh, and can cause infection if their nails get ripped off. They also can have bad air circulation aswell. Crickets can often chew their way thru the mesh and get out.
Heres what a reptarium looks like
Cages are the best way to go. Chams can't get their nails caught in the screen, unless their small size holes in screen...
Heres a picture of what my screen cage looks like that I made
Have you noticed a big difference in heat/humidity having a laminated pegboard backing? You told me before that you haven't had any problem with the particle board swelling up with moisture so I think I am going to try it. I hope it will work well up here in AK.