Cascading Pen Case / Pen Case

We put pen case to make it 75 ° tilt to the user, and the user can easily handle get out of the pen and the pen can be easily thrown into the pen case when finish using. The using processes are easy for people to use and mouth to users make it convenient in casual.
If you put pen case is full, or need to be classified, cascading Pen Case can easily be stacked up, and did not take up the table space. The officers will no longer face with a row of pen cases in front of the table.
Is that very convenient for you to use?