BUT:
it is small, and to write any less time with, it is imperative to re-capuchoner at the back, if not its size that it does not at all well in hand (and I do not have particularly large hands). I may be had to buy the largest model, but I did not know it existed. As is mea culpa, I do not take away a star for that.
But above all, I accidentally dropped my office (it happens!) So about 90cm, and it's falling vertically cap first, because I had all the trouble to reopen. Unable to force too much without risking to break the clip, and the grip on the handle is reduced given the size of the pen. In short, it was a hassle and I put almost 10 minutes to open it again. Similarly, we must not press too strong when, if the cap is also very hard to remove.
This last point is particularly bad, I do not understand why the central ring does not limit the travel of the cap. The Pen closing quality is very uneven depending on the pressure that is exerted on the cap, and we can end up with too much hassle a good time to open before using it. This makes a deal breaker instead of "first pen" in my bag that I carry with me to use in all conditions.