Wouldn't be too bad from what I have seen, but my Beardie is kinda dumb sometimes because she thinks she can go through glass and out the window.

If you want to do it I'd say go for it, nothing really can harm the Beardie. Just remember to not place anything near a window that can melt. And also UV rays from the sun can't go through glass, so getting UV light from the sun into the enclosure is most likely impossible.