Interesting article, and that Samsung gadget looks like a cool device...
I play a lot of point & click adventure games on my convertible-type tablet PC. It works really well with the old ScummVM titles and also with more modern games like Telltale's Sam & Max series.
My PC has a Wacom active digitizer (electromagnetic resonance based). This is great for adventure games because the screen can read the position of the stylus even when it's not touching the screen, i.e. you can move the mouse pointer without clicking, which can't be done with resistive screens.
The only real problem I've run into so far is related to the screen resolutions old games use. The stylus calibration gets out of whack when I don't use the screens native resolution (1280x800), so I play ScummVM games in windowed mode to get around this. The four adventure classics that LucasArts released on Steam earlier this summer can go fullscreen without changing the resolution, which also resolves the problem.
Miaghstir: A question though - how would one do a "right-click" on a tablet? Many games have different actions for right and left buttons, so it's important to be able to do both while in tablet mode (preferably in an easy way, like Apple does with ctrl - hold the button and click).
There are different methods for different types of tablet screens. With the active digitizer screens, the stylus has a button that you can hold while tapping the screen to right click. As Aliasalpha already mentioned, other types of screens may use tap-and-hold or similar.