Thanks that's helpful. Those ceiling brackets look pretty inconspicuous, that's nice.
Are you looking at this product
Yes, that's basically the product I was looking at (also this, I guess).
Have also recently been looking into something like this or this, which look much nicer. But it's interesting how hard it is to track down info on where to purchase, and specs on radio options (e.g. wifi, z-wave, etc). If I follow breadcrumbs around the internet, my impression is that you can get a z-wave radio for this system, but haven't quite figured out how yet.