I borrowed a friend's 70-200mm f/2.8G to shoot some cross country races and a marathon over the weekend and was really impressed by its AF performance on my Nikon D750. Up until now, I have been shooting sports with the O75/1.8, O40-150/4-5.6, or a P100-300, depending on the situation. None of those has terribly fast AF, and the Panny is actually very slow to lock on at the long end, so it's gotten me thinking about the 40-150/2.8. Obviously I recognize that the Oly 40-150/2.8 costs and weighs less than a full frame f/2.8 tele-zoom (and has greater reach, less bokeh-generating ability, etc., etc.) But I am interested to hear from 40-150mm/2.8 users who can compare its AF accuracy and speed to their previous (or current) experiences with a Canikon 70-200mm/2.8.