My local stationer recommended and sold me this pen a few days back. The claims appear to be true. Really smooth writing and the liquid ink is permanent. However just like with FPs, the downside of this super smoothness is that the line definition is not as sharp as on the Vision Needle (UB-187) for example. Due to the liquid ink, the line on paper is not as glistening bright as the line made by the gel ink based Signo UM-100.
Have any of you used this pen, what is your opinion? Looking fwd to hearing your views.