I'm going to be doing some international travel later this year and I would like to avoid checking bags if at all possible. I know the rule is one carry-on bag and one personal item such as a laptop bag, purse etc. Could I get away with a carry-on sized bag, to put in the overhead, and a carry-on sized underseat bag? For example, could I get on with these two?: 
Or maybe even two of the first one?
Or maybe even two of the first one?












