Check'n, carry one or just cruising. A great option for all type of travelers with a busy schedule. The split zip design allows it to be easily packed and gear quickly accessed in a hurry. It has space for a 15" Macbook Pro, shoes, clothes a random bits of junk you might be carrying around - an expandable 42L to 48L means you can really fit a good chunk of gear in there for your adventures.
What's different with the Macheto is it has shoulder straps that tuck out of the way and the pack used as a "briefcase". Two external compression straps keep everything secure and tight which makes it easy to slam it into the overheard compartment.