Hey Tom! Some Feedback on the pdf reading:
-Even after the update, some of the credit cards effects are a bit hard to read on my end (the "cut in the card" letters that play on the transparency of the layer).
-The double spread is very nice, and I approve of it, it helps make the book pop a lot more, it introduces a problem with the page count where the pdf readers don't match the actual pages they're on (since functionally every page is 2 pages, but the pdf reader counts them as 1 page).
What I did was I used PDF arranger to split every page, and then downloaded it, and I view them all in two-page format. It's as seamless as it should be and you can print it just like that. I put a blank page after the front cover, and before the back so when viewing they are aligned, and then I remove those two to print, double sided.