I havent used it or seen it, have a look on YouTube for some reviews.
I am using the Smart Keyboard for my Air and it's amazing, I bought an extra case to cover the back, as for some reason with the air, the Smart Keyboard doesn't offer back protection.
When I first got the iPad Air, I bought a mid range priced bluetooth keyboard/case from amazon, while it was ok, I had lots of issues with the keys, connection drop out, it didnt feel like an extension of my air which is what I wanted, when I say extension, I meant something that works seamless like the pencil I have. I felt the case I got was a lot of faff of connecting and not. The keyboard/case was just a bit of a faff and didn't all ways work.
While the Smart Keyboard is expensive and doesnt offer back protection, it works so well, as it's done on the smart connector there is no connection issue and it just works well, there is no battery to charge in the case either, I have not had a single issue with the smart keyboard, I can unlock my iPad and it's ready to go.
It might be worth considering the issues people have with bluetooth keyboard and how it can be a bit of a faff,
