Eh, I’d personally just get a more ergonomic vertical mouse, wired if you need the absolute lowest latency. Much easier to come by and they’re cheap. I used an evoluent I think it was wireless mouse for DotA2 when I played it ranked years ago, and I found it more than capable to climb the ranks with it. I also have a Logitech gaming mouse, for comparison.

Some vertical mice can easily be found on Amazon or anywhere really. Logitech makes one (it’s okay) and a few others as well.

Conversely, if just looking for more ergonomics, you could try a hyperlight mouse with a good gliding wrist wrest.