One of the best assets I've purchased on cgtrader. It loaded into character creator in obj form, and as long as you keep the textures in the same folder with the other files in the obj zip, it was absolutely trouble free. Loading it into iclone allowed dividing all the books into individual books, and I was able to find one with the look I needed, and just replace the base color textures. It's trouble free on iClone! But you still have to learn to extract just one of them, which turned out to be easy in iClone.
The purchase of the "open books collection" opens a large spectrum for my creativity, and shortens my workflow considerably. The downloaded files are of a good quality. Exactly what I wanted for my work.