QUOTE(marquis @ Jul 26 2013, 09:55 AM)
Erm, I'm aware of how the tech works

Allow me to rephrase what I said to avoid any more confusion (apologies for that btw):
What's the big deal with the palm rejection technology if it doesn't work? The video clearly shows that it cannot accept stylus input whilst another is alreay present.
Or is there a certain way to hold the phone in order to make it work?
Or did they not include it in the ZU? I never really took much notice of this particular tech as more oft than not I'll be using the kb for input. Now that you've brought it up though, makes for an interesting discussion...and broadens our collective knowledge

Since I'm a Note user, I use it for note taking and occasional sketching. The natural way of writing is you rest your palm edge on some surface to write.
The Note 2, at 5.5", sometimes needs you to place the palm at the bottom edge of the screen to write from the top of the screen. I can do this and still write without any problems.
If I had to keep my hand above the screen the whole time, I will not be able to take down notes more than 1 or 2 sentences at most. You can verify this by taking a small piece of paper, say A5, and test writing with palm on paper and hand above paper.
Given the humongous size of the ZU, if you want to write notes in a meeting, which can get to be quite a lot, it will be natural to expect that you treat the screen surface as a regular writing surface since you are using a regular writing instrument ie pen/pencil.
I am fond of *active* digitizers I had contemplated the ZU as a refresh for my new device, but because I have tried many other styli for my other non-active digitizer device, I am more keenly aware of the need for palm rejection.