I tried the concept of the notebook kit I made for supi° on myself. It has been helpful to reorganise thoughts in very small sheets of paper. This obliged me to describe a concept in a little amount of words.
The second characteristic is that it allows me to move the sheets around and then attach them together when I finalise decisions.
It was helpful for the purpose, but the overall idea is that it's very fragile and not very usable if not sitting at a desk. It can help to explain concepts and ideas but it is of any use as a portable notebook.