I wouldn't buy the thing without knowing that people have tested the keyboard for like 3 months. 2 co-workers had to replace their keyboard twice already, and one of them already has a faulty space bar again.

Only if it makes people silky smooth

Since you already own the magic mouse, maybe you could try to fix the glaring ergonomic problems of the design by using this: http://mmfixed.com/. It will allow you to keep the touch gesture features (only thing that makes the mmouse worth it imo) and it's like $16 to get it shipped to Italy. I would also check Dr Levi stretches for gamers, I've developed tendonitis myself because of mouse abuse and his exercises have helped a lot! No more pain since. https://www.youtube.com/watch?v=EiRC80FJbHU