Nice gel line. Very grippy. Most people said it was just a little too thick. Which can be a little fatiguing after a while. A swirl or similar pattern would add visual interest. Near the tip.
My first purchase was the black 0.7 mm point. The writing looked as if I had been stabbing bricks. When I contacted their help office they quickly replaced the pens with the black 0.5 mm point. The point stood up to standard usage especially writing checks. The match was perfect.