It's a little hard to take the example seriously when you've clearly padding the Ember version with code you don't have (but would need) in the ko version.
Hmmm..I guess my point was that I don't need that code n the knockout version. In knockout the 'view' is my html template, in ember I have to have a separate class to the bind to my html. The author has pointed out that I'm using the wrong app style so I need to look back at what the are suggesting.