Hi Tom,
This is a brand new item, we haven't even seen on in person yet. You can use it for glass or acrylic. If you use it on acrylic though, just don't push move it. Meaning, find a spot, then put together and don't move and should be fine. I think if you tried to move it would scratch.
I think it will be really strong. Tunze usually does good R&D on there products before releasing them.
thanks