@freemo I remember the feeling I got the first time I started practicing calligraphy. It was simply amazing. However, that effect wears off rather quickly and now it takes a lot for me to impress myself. I started with a pilot parallel pen (3,8 mm) and moved on from there.
I've noticed that switching between a wide and a narrow calligraphy nib changes everything. My italic is acceptable in all sizes, but textura quadrata and fraktur just don't work if the nib is narrower than 1,9 mm. Therefore, I would recommend trying wider nibs too. You'll be amazed.
@freemo it's wide enough to give you plenty of line variation, so I would say it's good enough for italic, foundational and uncial. The edge of the line is probably about as crisp as with a stub nib, which is acceptable. Writing with an actual calligraphy pen is really scratchy and IMO it doesn't really add all that much to the resulting line structure.
@PunaisetPimpulat My music nib is VERY broad (probably a 3B) But it isnt calligraphy, none of the pens are. But it comes closer than the rest.