The lock itself works great. Small, inconspicuous functions great for low level protection. I use it for my gym locker and for checked international baggage as it was designed for.
I just got back from a trip to a certain country in Africa. My carry on was overweight so I was forced to bury my laptop in my checked luggage. I had the lock, so I didn't feel too bad with the decision.
Once I picked up the bag iat my next stop I noticed the lock was missing as was the laptop.

FYI - this lock will not protect against corrupt baggage handlers who either use the master key or snips to go though your luggage and take what they want as with all of the TSA approved locks.