Touch type (meaning "type without looking") ... almost. And I can type pretty fast that way... on my G1. With the N810's keyboard? no, not even a little. But that's not because of "physical keyboard vs stylus", that because of "keyboard with amazingly bad ergonomics". But, either way, it is less of a cognitive shift to look down and watch what I'm typing, than to change my mode of input.

As for stylus, to me, the stylus is a specialized input device, for when I need precision. For all other touch screen control, I prefer using my finger. Even when I had my stylus pre-placed in my hand, I still found it to be a cognitive interruption to switch input modes for using it.

Whereas, with the NIT held firmly in both hands, I could use my thumbs for everything (slide closed, thumb around on the screen, slide open, type, slide closed, thumb navigate, slide open, type, hit the dpad some, etc.). I don't find those operations to be a cognitive interruption at all.