
I used a vertically oriented mouse like that for a while when I had RSI. Also mapped mouse keys to the keyboard with autohotkey, just for variation. These days have a kensington ‘expert mouse’ trackball and on my laptop its the trackpad like everyone else.
Got a cheap bluetooth/2.5Ghz trackball for my laptop, and wow, those are SO nice when you don’t have a lot of space to work with.
I hope some mid-level enthusiast trackballs that aren’t ridiculously boutique become a thing soon haha.
Is it weird to like this? I feel like this would be hella comfortable. Does it have buttons on the side for the fingers? Because that would be cool as hell.
Ergonomic mice almost all look like this
I used a vertical mouse for a while and found that it puts more strain on my shoulder and ended up going back. Your mileage may vary
You have to sit pretty strangely, like leaned back with your arm fully against your side so the weight of your forearm pushes into you rather than pulling on your shoulder. It does trade a LOT of hand strain for a slight bit of shoulder strain though.

