This pen reminds me of what used to be my favourite writing instrument back in the 1970s. I wrote my university dissertation with a Papermate Tempo (or maybe more than one) and of that ease of being able to write in a cursive hand with legibility over a sustained period. At the time that certainly helped the poor typist who was employed to present the thesis in the required format. Now I choose the Sign Pen when I want a definite black line not achievable with a normal fineliner - although those are equally excellent for sketching or making small notes.
