A few months ago I switched to a vertical mouse and can’t recommend it enough.

I couldn't adapt to the fact that, when I click, I have to be mindful of not moving the mouse sideways with the right amount of finger pressure.

I recently tried it but my muscle memory just refused to cope. I used to do a lot of competitve fps gaming and its hard to imagine a different way to hold a house. I do use a kineses ergonomic keyboard though but adapting to that felt much more normal than the mouse stuff idk why