I've used zooms from different manufacturers and have gotten used to switching back and forth on the zoom direction, just like each lens is different ergonomically.
Totally off-topic but what I find much more annoying is the way Canon switched around the zoom ring and focusing ring on the 24-105. Now THAT is irritating.
Not sure I understand. They are the same on the 24-105 as they are on the 70-200 (inner = zoom, outer = focus).
p.s. i am not expert in lens design or optics even engineer
seems focus ring placement are related to focus group location
as tamron place the USD motor at the back ? (in 70 300 and 150 600)
then A16 have a ring going around like sigma 17 70 , it was at the front
canon 24 105 will have element moving visible in front (like middle at the lens), then it was at front
70 200 2.8 seems also at front (i saw something moving there)
my minolta 70 210 beercan F4 also , it was not IF and sure front was a ring turning around ~
sorry i just guessing about it .__." because there is a physical connection between the ring and the focus stuff and it sounds true that to placing the ring nearby
unless it was wired motor like STM or sony E mount lens .