A while back...and on Richard Binder's com....Stub was easier to write with than Cursive Italic in it had rounded corners.....if they round the corners even more...what are you looking at a flat footed round ball?
A super rounded Stub??????
Well why not get German pens of the '50-60s. Soennecken, MB, Pelikan, Kaweco, Geha or Osmia. They are all stubbish nibs + are semi or maxi-semi-flex. They are line variation on demand.
Your nail/semi-nail stub or CI is max line variation at all times.
The difference was Cursive Italic was easier to write with than Italic, and Stubb easier to write with than Cursive Italic....it is my impression a newer nib form. Way back when....a decade or so go.
Stubs is easy to write with, I have a '36 Canadian Factory Parker BB nail stub on a '39-40 Vac. I have a maxi-semi-flex Australian (50's?)Sheaffer factory BB stub. They are easy to write with. And very, very different in one is a nail and the other is maxi-semi-flex.
Some day...I'm going to have my semi-nail BB 605's nib made stub. I have a CI that is either a Fat M or a skinny B or a M-B...in some tipping is lost when grinding. It was the pen below.
Cursive Italic is slightly rounded italic. You get some of the italic sharp line, but the corners are smoothed a bit so one can write with it. Actually I see Italic as a printing nib; drawing the letter, to get max out of it, then one is moving slower and lifting more so the sharp corners are not caught so often.
Pendelton Brown did my dead boring Lamy Persona 18 K OB nail into Cursive Italic. It has to be held more precisely than a stub. It gives a nice sharper line than a stub...if one looks hard enough.
You should send a picture showing how you hold 'that' pen so the exact angle is achieved for either.
Pendelton Brown's work, pictures and hand writing.
And the 1990 Lamy Persona's cap with the reassessed clip...that clip and cap and the modern clip and cap for the 'new' Imporium ...is the difference between the two pens...both designed by the same guy. RIP.
The Imporium, has some nifty colored nibs, that are unfortunately different than this one. I'm very impressed with the 2X tine spread only... ...but very bendy 'Springy' nib....better than MB or Falcon....IMO.
This nib had been an Oblique Broad before it was made CI.