Not currently, but they are working on it. I shared your previous post to Acclorite in the Matrix group for the project, and they said:
As for discussed features, they all have dedicated issues, e.g. opening book directly from the file manager, or pagination (which is a bit more promising to implement than before in newer versions of UI library I use).
I currently work with the Reader part as I mentioned before, so there’ll be a lot of changes in that area, hopefully including new layouts to read a book.