Yesterday I used skritter on my Asus EEE Pad tablet (Honeycomb 3.1). I think it works pretty well and I will be able to use it on my summer holidays :)
But... there are a few things to improve (imho):
1) It's a bit sluggish (sometimes too much), so you write and after a while the line appears. It's ok to draw straight lines but curved ones is almost impossible.
I think this is the most critical issue.
2) When writing, my hand hides the right panel so it would be nice to swap them (writing canvas on the right, info on the left).
3) I miss a button for removing the last stroke ("z" key not available...)