Illustrated with ink, coloured with water colour. This also counts as a bit of a tube tale. With the water colour tube tales I do the colour first and then ink on top.
I find the whole process deeply cathartic. It's great stress relief, acting as a form of meditation in my eyes. You end up in a kind of flow state trying to avoid being jolted and jogged and then you suddenly forget anyone is even there or that you are moving.