That's what I use and it's great. I'm a DAL FO and have plenty of $$$ to eat on the road, but choose to pack some stuff in a small cooler. Greek Yogurt, Fruit, String Cheese, Natural PB, Wheat Thins, Cliff Bars, and Dove Dark Chocolate. Makes life alot easier when you know you can go without food during a tight turn or when you get hungry and are at a crappy airport with no good food. I like it best for late layovers when you would rather sleep than go out for an hour to find food.

I still eat plenty from the airport and on layovers and 80kts is right, it's not that hard to find healty food in most airports.....costs alot more than buying it from the grocery store, but you can eat very healty now days if you know what to look for.