It's not vector, and my hand steadiness sucks.
I used to use a Wacom Tablet, but my lines were very shakey and messy. Recently I've learned to use the Pen Tool within Gimpshop, which is outstanding, it saves time, and makes everything look smooth. If you look at my older stuff, the lines are very stiff and edged, because I used to use the Line Tool, which was alright, but made everything look very jagged.
If you're looking to do lineart, I highly suggest the line tool, both in Photoshop or Gimpshop. It takes a bit of practice, but when you learn it, it saves so much time and energy. I mean, I just recently learned it.
Thanks for the comment though.