I can't imagine using something like openoffice or gnumeric and the associated menus with just a finger or finger/dpad (if even an option). One of the appealling things about the tablets is the ability to run non-ui-optimized software. Certianly things like debian, kde might suffer from lack of readily available stylus.

I like having the option to easily try other options on the tablet. I also typed this response on the stylus keyboard, I don't think I would have done it on the finger keyboard.