Of the current production, the RS-R*3 series, the S3X hubs and the CS-R*3 series Sturmey-Archer three speed hubs have different cable pulls than the AW series hubs.
HTH
Yes, this is a necrobump. But I wanted to thank you for this information. SA's website implies as much but doesn't come out and say it. I spent a couple hours trying to get a trigger to work with an S3X hub to find that it is possible....but adjustment is beyond finicky.
Guess I'll be dropping the coin to get the right shifter.