Err, the first I can see (having no personal experience), but AFAIK the only unmodded mice with toolless switch replacement are certain Asus gaming models. Foru

Err, the first I can see (having no personal experience), but AFAIK the only unmodded mice with toolless switch replacement are certain Asus gaming models. Forums tend to conclude that Asus holds a patent, but I've yet to see anyone find a citation. Ok, you made me actually search - there's also EpicGear and Taidu, apparently.