This link looks like a cybersquatter. Are you sure it leads to the videos you’re talking about?
http://www.gnomonworkshop.com
While I express myself well enough verbally, my hands tend to express my thoughts better than my speech. In other words, touch typing has extended my ability to nail exactly what I mean efficiently. Maybe it’s a question of which medium allows you to best express exactly what you want, combined with the need for efficiency. How many of us haven’t first done a quick 3D sketchup and then traced it and hand colored for a more organic visual effect?