Yes I use it. I haven't seen it for sale these days so check out builders skips.

You need the type that looks like an E in section. The slider is a PCB and you solder two wires up through the board to the point blades.

The slider sits in one of the slots normally the top one the bottom slider is used for screw heads.

I think the article you are after was written by my good friend JD Smith (it is the system used on Swaynton) in MRJ 131. I don't have a copy to confirm but the article appears on the index.

Curtain track or curtain wire? Have a look here - https://modratec.com/cart/index.php?main_page=product_info&cPath=2&products_id=33&zenid=3a06fe39f3aeb488ea1d8b45f008e5f9

Thanks guys. I'll look into these avenues