I'm planning on taking my Aeronaut as my carry on bag, and I'm thinking of getting a Western Flyer to use as my personal bag/briefcase, but was wondering if anyone had encountered any problems with airlines claiming the W.F. is too large to be considered a personal bag. And/or maybe it depends on how full one fills their W.F. Any thoughts or experiences with this would be appreciated. Maybe it just looks borderline large in some of the photos, but I'm just wondering if I'll be pushing the limit of the ever-changing airline rules. Thanks much.