1916 Reporting shortcut brief forms

Hey, I'm looking at the 1916 Reporting shortcuts manual that has been made available recently. I'm wondering if the 4 pages of extra word signs (brief forms) are worth learning if you have high aims for legibility as well. They are definetly very brief, but I have so far decided to stick with the phrasing shortcuts and avoid the word signs.

Has anyone had experience with these extra brief forms?

(by Michael for everyone)