Arabic calligraphy is traditionally done with a broad nibbed pen or a reed cut with a broad nib. Essentially the same tools used in western calligraphy up until the Spencerian and Copperplate developments with a flexible nib. Pitman depends on that flexibility from the Copperplate tradition. My old paleography professor called those relatively modern styles an abomination.

I write my Gregg with a broad nibbed pen, held at a 45 degree angle as it is usually taught for the italic style of calligraphy. It does lend a decidedly Arabic character to the Gregg. I've had several people ask what language I was writing, and many guess something from the Middle East.

Sometimes I do artistic work with calligraphy, and I've considered doing something with Gregg. The only drawback is that most people can't read it. Perhaps it is waiting for that special peice that needs to contain an exotic secret message that needs an effort to decode.