I am cuh-razy about floating/open shelving. Cray. For some reason, installing these shelves in particular was a major pain in the ass. We couldn't get it to be level and studs kept getting in the way of the anchor holes but finally after a few hours of what shouldn't have taken that long, there they hang.
former office had them too except now they make high gloss white floating shelves and you bet your bippy I got those instead. I bought them back in March and they've been waiting in the closet since.
Now, let us never speak of the floating shelves again.