I've had one for a while and my observations are as follows:
1. emulation seems pretty solid.
2. You cannot save a game such as Faery Tale Adventure directly. You have to do a savestate which is awkward at best.
3. The positioning of the jacks is also extremely awkward. Power switch is nestled between the HDMI jack and the power input. I was told a new model was coming out and the proto-testers would get the revised version. I ain't seen nothing yet!
4. They're announced a Armiga Forum. I signed up but as yet haven't gotten a confirmation email so can't log in.
In summary, not a bad idea, but honestly, WINUAE works a lot better and is cheaper.