I think where these guys made a mistake was not designing some sort of back slot for things like this where you could put a slab on the back of the laptop.

Slab on the back would have enough space, it wouldn't look so weird and cheap, and you could put all sorts of fun stuff back there like an actual docking module.

Or extra batteries.

I would be amazed if this thing sells much at all, because having that big square thing come out of the side of the laptop just looks like it's asking to break. It looks wrong, it feels wrong, and it's just not going to work.