I've got a small video of the
Quick Erase patch. The quality is of course horrible, and it rather demonstrates removing scribbles than putting them on. :-)
For me, the slight delay of the iLiad is actually not an issue when writing - but you have to get used to not seeing the text immediately. Of course, the Quick Erase (and now more gestures) makes fixing typos, changing pen color/thickness a breeze. :-)
/Rincewind