My airline is two merged. One of the two would always turn off the AT on a hand flown approach, the other would always leave the AT on during hand flown. I now do both of the above, plus sometimes leave both on, until very late, or auto land. If I am using AT on during hand flown, I turn it off at about 50', just before I retard the throttles.
I like using the AT during gusty conditions...it keeps the plane from getting too fast. It is slow in advancing thrust, so if the plane starts to get slow I manually push the throttles up a bit. I find this much less of a workload in gusty conditions than manual throttles.
Also, at my airline, we were all taught that the AT would maintain min safe speed in all conditions. We didn't know about this AT slow speed trap that caught Asiana until their crash. It was not in our publications. Our check airman tried the Asiana situation in the sim and were surprised that the airspeed was not maintained.