Script Shorthand continues to be useful for me when I receive quickie informaiton while I'm doing a task.  I can more quickly get back to what I was doing.  

Because the mindset is to think in terms of consonants without vowels to picture the words phoneticically to match the symbols, you need to consciously be aware of it when you're not taking shorthand notes, as I have sometimes have excluded vowels when I've written simple messages in greeting cards, for example.