>Tried this briefly (I assume you are referring to the first link?) But when using Safari with, say, an input element then the keyboard didn't kick in (but comes up when I change a url)
>Are you seeing the same behaviour?

It is acting strange. First of all, http://www.google.com does not respond. If you try http://www.microsoft.com, you will see that they keyboard comes out on the URL and the search but not on the site search.

And, my assumption is that can only work with a touch screen, which is what those devices are intended for.