Jack Usine is the owner and only type designer at 'FaType', a Type Foundry based in France. - http://fatype.com
I had already asked him questions for my dissertation, and would have loved for him to contribute towards the project. Here is some of our conversation:
As you can see, Jack wanted to make some corrections to the 'S' but unfortunately did not have the time for it. Here are the changes I have made in accordance:
As you can see, weight was taken off some of the curves, and some was added in the centre of the S.