Rox: It's far from perfect and you still have to clean up and correct lines afterwards, but it's still ten times faster than placing each dot by hand.
miascugh: I drew both lines in the example slowly by mouse, so speed isn't much of a factor.
Helm: Well, it might not be puritan, but personally I'm more concerned with saving time, so if a tool helps me shave off an hour's worth of cleaning up messy line-art, then I don't see the problem with that.