I also recently published a book written with Typst. It was absolutely a joy to work with, especially because the book was a collection of student essays. I converted them from docx to Typst and then getting all the figures and tables setup nicely and uniformly was easy. The PDF generation was perfect but converting to docx/epub I ran into a few bugs in pandoc. I reported them and a few were fixed and a few are still open. Overall, a very positive experience.

Book: https://thelabofthought.co/shop/p/nbmi3

Bugs: https://github.com/jgm/pandoc/issues?q=is%3Aissue%20state%3A...