I have been considering a carry on rod case from Fishpond or Orvis, but this makes me wonder whether it would be worthwhile. If this works for American, I suspect other airlines will find it attractive as yet another way to separate passengers from their money. I don't have a problem with sensible and consistent size restrictions for carry ons, but if it is anything other than a cynical money grab, the bag sizer should be at check in, not boarding.
American Airlines has started charging passengers bringing oversized carry-ons to gates. Here's what this policy change means for passengers.