I flew for an NG operator in the U.S (700/800) a couple of years ago and we were encouraged to use the A/T even in manual flight. I always wondered about it because the Boeing FCTM does not recommend it. The only time the A/T was not armed was during S/E. Some guys would go manual though. but our SOP was to have the A/T at all times,no winds, gusty winds etc.