Demons 1/2 on 4K UHD arrived from Arrow today. It was a bit pricey but because of the timing, I've made it this year's birthday present (which means the set will be wrapped up and unwatched for a couple of weeks). I did check the contents and that the discs loaded up okay. Something to look forward to. I'll happily buy any Argento 4K UHD releases, would love to see more coming (preferably directed by rather than just produced by).
btw The split in half outer packaging isn't very practical - when I first removed the cellophane and j card, the contents fell onto the floor. I'll have to be careful when pulling it off the shelf.