Long before I developed my comfort level with "real" art supplies, I would "doodle" on my lap using a black waterproof Uniball Vision pen. One day, while on an interview (art related), the Director who was was meeting with me said I needed to call my work "Pen and Ink" and graduate to "real" products such as special ink pens and better paper. Ha ha, now almost a decade later, I am learning not to listen to too many voices that tend to provide static which just interrupts true creativity. Art tools, one will come to appreciate are very personal. The real wisdom comes when you realize that you are truly making art for only one important critique and that is of course just YOU, the artist!