Not sure if I do this naturally or not, will go for a ride this weekend and see if I do and if not start to practice. Watched a few trail braking vids just to see close-ups of the brake to throttle motion and it appears this is a well used technique.
Watching other vids on trail breaking you can see MM doing the same thing and i'd be suprissed if he didn't have a QAT.
Check most top riders, they do the same. I do too on track, don’t bother on road. But I am terrible at trail braking.