>>3862603Both my ruling pens are top tier for cartography/architecture (talking 50€ range) and they're not knife sharp but close. The points are hardened, just like knife blades, so they're meant to be sharp.
Your G pen should definitely move in all directions, you should be able to make swirls and doodles. It has to be your paper or your hand. Use Bristol board or something as smooth. I can draw lines directly upwards on printer paper without the nib catching, and I haven't had a dip pen catch on paper in a long time.
Just practice some more until you are comfortable with the tool, I remember that I used to have trouble with the nibs catching when I began (but I used horrible Leonardt and Hunt nibs instead of Japanese ones). The only nibs that I know will catch if I move in odd directions are crowquills like the Brause 511 / maru pens but in that case you simply move the pen sideways and up with your wrist, or you simply rotate the paper to make an ideal stroke (this should be your default at all times anyway).