The problem is you want to lug that heavy carry-on bag around the airport, not one airport but BOTH airports....just because George Clooney told you that you saves some time leaving your arrival airport by skipping baggage claim. In the end, you need to queue up to grab overhead baggage space with other passengers, is it worth it?
I will whisk around the airports with a slingbag with both my hands free. My carry-on bag is always check-in. I sit in the lounge and walk to the gate some 30 -20 min before departure. No queue, no fuss, no hassle, no worries......
People tell me that they do carry-on because of lost baggage experience. Well, I lost my bags twice and that was in the late 80s on some small US airlines.....we are now 2017, the system is almost foolproof.
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