Hi Andy,
Checked in with luggage? No stikin way, nor for me, sir!
The aero case is a good case, an excellent gigging case; great at protecting the guit from the normal bumps and scrapes of getting around, including to/from a venue. And a natural lightweight case for travelling in a car or flying if on your back. But in NO way would any "hard" gigbag be sufficient protection for any serious travel duress like
stacking in a cargo van full of PA gear, and certainly not with the luggage that is thrown --
thrown-- around by airline baggage handlers who are working at breakneck speed and care precious little --
nothing, it seems-- about the parcels they are moving around to keep on schedule.
That said, I've so far had decent luck about having a gigbag on my back and been able to get on board with it. I'm no frequent flyer so others with more air miles please chime in. But over a few flights over say 5 years, I've been able to "sneak" into the cabin --be quick with a smile and exxxxtra polite and accommodating-- with my guit on my back and not a word. Obviously, the smaller the better, so the the aerocase's size may raise an eyebrow. I know there is "policy," but really, you are at the mercy of the person and their mood at that given moment. FWIW, I travel with an electric now simply because it's looks smaller/thinner and, of course, a tele is fairly indestructible

Food for thought ...hope this helps you a bit

BTW, for grins and giggles, one should ALWAYS pull up the old youtube vid: United Breaks Guitars. True, but also funny as all get out! Bob ended up doing a solid for the guy after the dust settled, which is always a nice outcome.
Edward