Interesting idea. I just saw this https://aeropress.com/products/aeropress-flow-control-filter-cap https://aeropress.com/products/aeropress-flow-control-filter.

Interesting idea. I just saw this https://aeropress.com/products/aeropress-flow-control-filter-cap https://aeropress.com/products/aeropress-flow-control-filter..., so you can do the inverted without the inversion, could be interesting! I order one to see :)