By their own admission, only 20% of AS pax will be impacted by this:

•Total passengers enplaned 2011: 17.8 million
•20% of that equals 3.56 million per year
•That equals just over 9,750 travelers per day will (could) be impacted.

And that just at Alaska Airlines. Granted, many of those travelers may not check bags, but the numbers would be staggering if this could be quantified on an industry basis.