I know this is coffee, leave your CAD at the door, but, I came across some comments that I'd saved from the pre-worm forums. I might be missing a couple (most notably, the post that spawned all of the subsequent commentary).
So, in the attached pdf, you can find a discussion by the forumers about the benefits of having learned to draft on the board, and the benefits of switching to CAD later on.
Just a little light reading if you are interested... enjoy