I am on planes multiple times during the week. Often flying in for an appointment one day and returning the next. I don't have time for an airline to lose my luggage and they have. Even if I am traveling up to 3 days all I take is my rolling briefcase (including my laptop) which doubles as a suitcase and sometimes I take my purse too. The briefcase is about 1/2 the size of the bags that I usually see go into the overhead and there is always room for someone else's coat to go in the overhead with it. On some planes this bag will fit under middle or window seat but never has it fit into the aisle seat. But hey perhaps they will charge me depending upon the seat I am assigned. I will NEVER fly an airline that charges (punishes me) for packing very lightly and placinging everything I need into one SMALL bag. Nor should my company be forced to pay extra. Ban coats in the overhead first!