When it comes down to writing with the pen, it's a really comfortable experience for my hand and grip. The grip section is a nice size and has plenty of surface area to hold onto. Even though it's a smooth surface, the polished acrylic has plenty of grip to easily control the pen. Given the large size, I think this will work well with a large variety of different grips and hand sizes. The cap posts on the back of pen securely, but I find this to add too much weight to the top. The pen is a perfectly balanced weight when the cap isn't posted.
The #6 JoWo nib is fairly plain in terms of decoration, but it performs beautifully. The fine nib on this unit is smooth and precise, and the ink feeds perfectly. It's a steel nib with a fairly small tip, so the writing line is crisp and thin, but there's just enough spring in the nib to make it really comfortable to use — it doesn't feel like writing with a rigid nail at all. It's a great middle-ground of a cushioned feel along with crisp, controlled lines.