I have to try this. I already have a reverser (how on earth is this not the default, and not even an OS option to begin with?!?) but scrolling with the wheel on a usb mouse jumps randomly. Crossing fingers this may help there.
For smoother scrolling with a non-Apple mouse/trackpad you might want to look at Smooze [0], it's what I use for my logitech mouse. That said, it's paid and it looks like Moz [1] claims to fix smooth scrolling so maybe check that out too.