Nice use of materials. I like the small link chain over cabling here. In our plain, cozy spaces this would give the room some visual texture. I like it.

That is a really neat design! By painting the shelves a darker color, you make it seem more elegant and classy.

Great DIY project. There's so much flexibility in materials, too. But you're right when you say, make sure you hit wood. Otherwise, somebody had better write a good wall patch post pretty soon.