Pie installed from the link on page 51 - all good, took less than 2 minutes on the S9+ to install via Odin; the reboot took a few minutes longer though.
So far so good - I gave the new UI a go, but I just couldn't get on with those massive icons! I also use a custom DPI of 581 in dev mode, which meant that I was unable to reduce the icon size via the grid adjustment - so I have gone back to Nova.
Liking the new off-screen gesture buttons, they seemed to have dropped the single button (like I had on the Pixel + Pie), and have replaced that with a full-screen mode, where you can swipe up form the Left to bring up recent, Middle for home, and Right for back.