I had that big ugly old yellow tag on my suitcase and a passenger still walked off the plane with my bag and made it all the way home at an outstation... Back in base, I found his bag instead of mine in the overhead... I called said passenger and he was absolutely oblivious... His bag looked nothing like mine and didn't have a blue flight safety CREW tag or a yellow DO NOT REMOVE CREWMEMBER ONBOARD tag like mine did...

And for that reason I still keep that big ugly yellow tag on my suitecase in a vain attempt to hope that no passenger in the future will be as oblivious to remove my bag like that again...