This is done on my Tablet PC in Alias Sketchbook. I've finally mastered the inkbrush tool and it gives me lines I am having a hard time reproducing in real life. And it is extremely quick to do. I don't do any finished penciling at all and with the undo key and the eraser onboard the tablet pen I do all corrections on the fly immediately as I make them. I am seriously thinking about inking professionally with the computer.