Good practice, in my opinion anyways, at least several times a month, disconnect the AP/AT and fly the approach full manual. I find if I don't do that, the airspeed indicator gradually falls out of my scan, exactly because the auto throttles do such a good job of maintaining it. Human nature, what doesn't need attention, doesn't get it, we form very lazy habits, and do so quickly.
It's clearly a case, especially for the Airbus folks, of taking control of the airplane back from the automatics, and religiously maintaining that proficiency. As trite as this may sound, and as often as you've heard it, it does need repeating; if you don't fly the airplane, it will end up flying you.
To places that have recently been in the news.
Those of you who fly for the Asian carriers, is that even allowed?