Mechanical drawing? I really like those. They're so insanely stylized, even more so than Superflat or Ligne Claire.
You're right, wacom pen pressure is not perfect. I think it helps to have some preset brushes with varied 'lead hardness'. At least that is what I tried with my collection of
Photoshop pencils (WARNING: Female anatomy in link)
Yikes - my Sketch Pad froze in the middle of its first 'artistic nude'. :'-(