What if...and this is the important part...you do not book your tickets on the AS website, do you still get the triple miles? What if not every segment is on AS (but the first one is?).

I made another post about the fact that if I book my itinerary through the American website, I can get better flight times (since AS does not let you book partner segments).

If I'll get the triple miles, I'll use my AS Visa. If not, I will want to use a different credit card for a different promotional reason.