I do think it’s very interesting, having a visual script to succinctly describe a base-20 system. The example problems were very softball, I get it to explain the function but I don’t know how helpful it would be for multiplying and dividing high one digit numbers.

But for adding and subtracting (which is helpful for most everyday needs) it’s quite intuitive, because the W is equal to the sideways slash and the sideways M is equal to the vertical slash.