I use an Evolulent and a ProtoArc Trackball for vertical mice. I haven’t had any issues with them on Linux, but I also haven’t really customized any of their settings… I think. Maybe I changed what the 2 extra buttons do on them and I don’t recall using anything other than what’s available on Fedora to accomplish that.

It’s -$140 in my area. Additionally, the 2 other models I picked first didn’t have that option at all.

I think Clipperz is. Somebody please correct me if I’m wrong.