Originally Posted by
Dave Noble
There will generally be less in the bag, but the bag will still have the same volume - I don't know many people who take a different carry on bag depending on whether luggage is checked in or not
Surely it's not a question of a different carry-on but an additional one. I'll always carry on the same small backpack for personal items, but for shorter trips where I don't have a suitcase in the hold I'll also carry on a small suitcase with clothes. I can't imagine this is unusual behaviour.