IF you use FBReader on android, there is an app that will sync between multiple android devices.
see this thread:
https://www.mobileread.com/forums/sho...d.php?t=119184
I use aldiko, so I haven't tried this app yet, but I think I might give it a go.
It is too soon to know if the new Nook Touch will be hacked/rooted, but I would guess that it would be!