Here are some of my Pen, Ink and Watercolour Wash paintings.
I enjoying Pen and Ink work and find it compliments my watercolour paintings very well. Pen and Ink with the addition of a brush and water is a great medium when traveling as you can create very quick sketches without having to carry a lot of gear with you.
It is also a great medium for helping you to improve your drawing skills as it forces you to look and think about what you are going to draw before you put pen to paper, as once you touch the paper with your ink the mark has to stay there!