...and, you can do it whichever way is more comfortable or intuitive to you.
It makes sense to have the fullest grip possible at max power - all fingers gripping, thus pull for hi to get the index finger into the picture.
If your setup doesn't naturally fall in with your preference, it it simple to add a reversing link somewhere in the system.
Sure, the fewer parts the better, but something as simple as a sorta bellcrank - puhrod from the 3-line unit pushes/pulls one side of a small link, and on the other side of the link's pivot - same distance for the same travel - the link to the throttle.
Sometimes this can help the linkage to clear the fuel tank or other front end obstructions, too.
Reversing leads to a servo sounds too simple!