There is another good option for Chameleons especially.
Those Virgin Cork Tiles, zoomed sells some but so do other businesses for your walls and such.
My huge Viv uses it as walls, and a good thing about it, is the Cham can safely scale it, without worry of nail damage like screen.
I have noticed, it can be a little slippery for them. When mine is scaling it, sometimes he will lose footing with a foot, he hasn't fallen off, but sometimes he loses some traction it seems. However that likely happens when they scale large trees in the wild too. He seemingly knows, how to scale it. He goes very slow, and is selective of feet placement.
I'm not sure if chams can or will climb the great stuff walls never seen it. However they defiantly can and will climb the cork walls.
IMO it's more natural for chameleon walls as well. The great stuff and ecoearth approach I have always felt, was trying to imitate a cut or a groove in the soil, which is great for frogs that live down there, but feels off to me for a Chameleon.
I like tree fern panels for chameleons too, good for mounting epiphytes to. However that's more expensive than cork by quite a bit.
My biggest complaint about the cork tiles, is they don't make one that is 24 wide. They make them for their Vivariums they say, and they are max 18 wide and 24 tall. It's hard to find other folks with 24w too. Only one I found, wants outrageous price for it.