Interesting concept.
Personally I use Rocketbooks product, the Wave notebook. If I write in it with a frixion pen, i can just thriw the notebook in the microwave with a cup of water for a minute ir so and every page is blank again.
This is all to say that I REALLY follow these concepts a lot !
So thanks for sharing !
It's more than concept, it is real product. You can buy it on their website.
You can take a look at the review (unfortunately only japan version) looks very promising, check out writing !