I have clear windows on an older Bestop. I tore the top on a tree a couple years ago and would like to get a new one, but I'm not willing to have tinted windows, so for now I just have gorilla tape on the tear.
I have heard that you can take a top to a canvas shop and get clear windows put in it. I haven't looked into that to get a cost, but if / when my top needs to be replaced I'll be looking at that.
My other option is to get a new Bestop and put my old windows in it. The windows are in good enough shape that I can actually consider that. But I think the older material will look faded when next to new material.