Also, unless is can partially fold, your head will either be facing down to look at the screen or if it's vertical your hands will be raised to type. Both of these things are terrible for long term use ergonomics.
I see the benefit for travelling or as a household device. But I don't think touch screen technology has shown potential for increase productivity with any full-time/professional use.
Besides, I use 10 fingers to control the UI on my macbook.
1. Covering up the screen is a problem.
I can see how it could work to cover the screen while manipulating but move your hands to the side when you aren't.
2. A drafting setup is terrible from an ergonomic perspective.
Is there a history of overuse injury in people that work at drafting tables?