Generally, a relatively decent choice! If the mouse is your right hand, go for something more expensive!

After 3-4 months of use, the wheel does not work properly. The rubber cover rotates but the wheel does not.

After 7 months of use, the roller broke and "shakes". It's a shame because it was very comfortable for the hand...

I have been using it for a week now, obviously it is not a magical solution for all the wrist pains caused by prolonged use, however, for now, it doesn't leave my hand as tired as a conventional mouse.
Its size is suitable for medium and larger hands, you can hold it in 1-2 different ways.
The construction and grip are satisfactory.

On the negative side, the buttons and the scroll wheel are harder than usual mice, resulting in me not having adapted to a workflow where I don't accidentally drag/drop instead of double-clicking.
Nevertheless, there is a way to replace the switches with softer ones and I will try it in the near future.
A simple guide:
https://geekhack.org/index.php?topic=57323.0

I bought it because of the carpal tunnel. I haven't had the same problems since I started using it. It takes a little time to get used to it, but then it feels strange when you go back to a regular mouse! It doesn't have the high responsiveness that gaming mice have, but it does a great job for normal games and simple use. The clicks are a little harder than usual and quite loud, but it doesn't bother me.

Comment mainly on the nature of the mouse.
Definitely worth a try for those who suffer from pain due to daily computer use and a fixed hand position.
Until this position "locks" too: )
Generally, change peripherals and office furniture frequently, no matter how convenient you find them, so that your hands do not get stuck in one position
and a half millimeter, a tenth of a degree, to change this permanent position, is a relief to the whole system (the organism).

Generally, I found the transition from a regular mouse to this one very easy, and from the first days, I saw a slight improvement. A year and more later, I forgot why I bought it, I forgot the pain I had for over ten years.
I can say that the specific one I tried helped me.