Sorry Tom, I should have stated this earlier... I've handled several different A1s now and none of them exhibited any sort of unexpected behavior in AF or IAF.

AF working fairly well for me. I have AF selected in my menu as opposed to IAF. Makes a difference in certain lighting conditions. Accurate focus in wide angle from a few inches to infinity. Hunts a bit zoomed in on anything less than a few feet away. I try not to use AF unless I have to.