Well, take a look at this:
Yes indeed, that’s Beru running on an actual Ubuntu Touch device. (And boy that icon doesn’t work!)
These screenshots are courtesy of His Holiness Alan Pope, who has a bunch more on Google+. Thanks to his troubleshooting, there are new even newer versions for testing (amd64, arm amd64, arm). It looks like permissions are working, automatic orientation is working, and (most excitingly) page turning by swiping is working! The big problem is that the U1DB to save your location in the book isn’t doing that. I think this is fixed now! I’ve filed a bug with my current understanding, but any and all assistance in getting this taken care of will be appreciated.
And I’m sure there’s many other bugs hiding in the corners, so everyone who can poke around and try to break things is valuable. Comments and bugs can go here or on Github.