Pros : No dripping, only draws when you are touching the surface. Can do very detailed work but you need to have a steady hand. Very fine line great for pendants. Perhaps the next size up would be better for larger projects.
Cons : Maybe a larger ink well or an add on piece would be good for larger work so you don't have to refill in the middle of something.
Other Thoughts : Wait a little bit for the ink to flow into the tip. Practice on paper or tile until the ink flows evenly. You can go over the lines when ink is dry if you need to deepen the color. I have used a glass paint that is a little thicker than water but not as thick as acrylic paint. If the paint drips of a paintbrush without flicking, chances are it will be fine to use in the pen. A steady hand is good to have but just dotting a design can work well if you are a bit shaky.