I'm very pleased with the looks
Yes, it does have that modern sculpture work of art look to it.
Just hang, make change antennas easy.
Yeah, that would be my favorite way of making an attic antenna, nice, easy and cheap. I would use styrofoam panels (which I have) to mount the elements on instead of cardboard because of the lower conductivity of styrofoam. But again, its only a teeny minor difference, unless the cardboard got wet.