One of the reasons why we use the locks is to prevent the zipper from unzipping accidentally under vibration or rough handling. If they cut the zip tie open, an

One of the reasons why we use the locks is to prevent the zipper from unzipping accidentally under vibration or rough handling. If they cut the zip tie open, and don't put a new one, the zipper won't have such protection for the second part of the trip. So a simple unsecure TSA lock and a tamper-evident sticker is probably an optimal combination.