My general thought right now is the same as yours, Isle.
So all the people using Tom Bihn and Red Oxx bags, which seem to be really popular, are just traveling for leisure or not in business attire (specifically a coat)? I was wondering if any of these bag users are business travelers and actually hand carrying these bags, but the folks I see in airports with suits are almost always rolling a 22" bag and folks with backpacks are normally in hoodies or camo.