Congrats on the new redesign. The new scrolling with two fingers is fantastic. I'm especially impressed at how well it works with footnotes displayed on the screen.
With the new redesign, however, I can't quite understand why Logos requires two fingers to scroll instead of just one. With the previous v2 app design it seemed to me that it made sense (on the iOS app) in order to avoid confusion with the swipe up and down motion. But now that the swipe up and down motion have thankfully been removed, I am inclined to think that there is no good reason to require two fingers to scroll.
A fantastic example of how this single finger scrolling is implemented in an app design almost identical to the new Logos Android v4 is Moon+ Reader. Like Logos v4 it has the option to do a single tap on the right or left side to swipe pages, a single tap in the middle to display top and bottom menus, and scrolling with 1 finger doesn't seem to cause any interference or difficulties.