Ergonomics for tablet stylus use as a visual artist

Hello,

As injuries such as RSIs are a big concern for artists, I am looking for general guidance on how to prevent wrist and hand injury when using a pressure-sensitive drawing tablet and stylus for hours every day.

Are pen grippers (the kind that slip onto a pen to make the barrel of the pen wider so your grip is less tight) helpful?

Unlike a pencil which can be used at any angle with little pressure, a stylus requires downward vertical pressure to create marks. What is the best grip and angle to hold the stylus at to avoid strain on the fingers and wrist?

Some information about stylus hand strain here: Pedes' scribbles - How to use a tablet without hurting your wrist

Thank you for your time