I am still going strong with the iPad and using it as a sketch tablet. I am still enjoying it and learning to get really comfortable with it. I still have some beefs with the program which I hope they will fix. The transform tool is not that great so it is a real pain to rotate items that are imported in and it automatically sets the piece so if you rotate the layer it will crop.
Just doing some comic style figure studies. Doing quick studies is not that bad with the iPad.