[BlindMath] Gardner–Salinas braille codes?

[Bill Dengler]

Hello,
I found this code on Wikipedia: https://en.wikipedia.org/wiki/Gardner–Salinas_braille_codes <https://en.wikipedia.org/wiki/Gardner%E2%80%93Salinas_braille_codes#Set_theory>
However, searching the list archives yields few relevant results. Does anyone here have experience with this system? Do you find it easier to use for personal notes/scratchwork than UEB or the older Nemeth Code? It seems much more compact than the aforementioned systems, allowing for more symbols on one line and more efficient usage especially when working with long expressions. Do you use it with a Braille display or on paper? If the latter, how do you write the 8-dot symbols?

Thanks,
Bill