Yeh I was close to buying My Book Duo too.
This was where I saw the Cloud Mirror reference about no encryption, but unfortunately the author nor the poster got back to the topic:
Scroll down a bit to see the Cloud Mirror recommendation.
The only drawback is that it’s a network drive only it seems. While it’s not a massive deal breaker, my router is not in my room so it must be outside in the lounge area, but I prefer being able to switch it on/off whenever I want, and needing to leave my room.
Otherwise, I hope someone can confirm! Thanks in advance.