Sometimes, the rules are relaxed for special situations. If the purpose of using the typeform is to draw attention to the handwritten script being studied —as with any other distinct typeface, such as Old English or calligraphy —then in this case according to BF §5.1.2 you would retain the script passage. UEB says you would place a script passage indicator before each text element (the paragraph and the attribution), and the script terminator following the attribution as stated in UEB §9.9.1.
You are right about the difficulty in finding examples of script text. There are so many print typefaces that represent script (see attached example). In literature, it's usually seen in reference to a hand-written note, like your example.
Best of luck with your workshop.
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