Help aspiring designer produce her pen for tremor

You may remember 18 year old A-Level Product Design student Olivia, is creating a weighted pen for people with essential tremor. She is now looking for feedback on the final finished product.

final product 1

product in use

final product 2

final product 3

final idea sketch

final idea modelling and orthographic drawings

 

Do you live with essential tremor?
What do you think about the aesthetics of the product (how it looks visually)?
What do you think about the functionality of the product? (Would you use it?)
If you could improve anything, what would you change?
Please feel free to add any extra notes if you wish to!
Thanks!