1. I don't know. I don't buy fake Chinese goods. I hate shopping.
2. There are many different sorts of suitcases used here. The PNT bag is used by many, but not all. On the 747, our suitcases are strapped down on the main deck.
3. In CVG and in ANC we have crew rooms that you can leave something stored there. It is leave at your own risk. We go to many places in the world, not just ANC, where you will want a coat in the winter.
4. Maybe some of the guys from IAH have Global Entry, but I haven't flown with anyone who has it.