Here, I just came across this, looks nearly identical.
I saw it and immediately thought of your posting. Give it a whirl and let us know how it comes out.
https://glazy.org/recipes/2467
Also, You can probably squeeze this in a cone 8 load. If you want, I can make a test of it, Im getting rid of my last bit of HF clay, and don't have enough glaze for all the pieces