Although I will be talking about Kindle, bear with me.
I have made a number of Bibles (KJV, WEB, NET) in the mobi format for the Kindle. See discussion for KJV here:
https://www.mobileread.com/forums/showthread.php?t=59871
In all of them, I am using three separate navigation methods: hyperlinked TOC, joystick jump between books, and what I call Direct Verse Jump (DVJ). DVJ is actually pretty nice on the Kindle. For me it is faster to open any verse in the Kindle than in the paper Bible.
DVJ requires text input so I do not know how it would work on Sony readers. Will touchscreen model work? To try you can take the sample from the link above and convert it to epub with Calibre.
I have sent a request to Zondervan for permission to issue an NIV edition with DVJ. I need to see how big royalties they would require.
Let me know if something like this would be useful for PRS.
You can also experiment with a full Bible in Chinese, which I released here for free.
https://www.mobileread.com/forums/sho...d.php?p=679688