Re: Air travel
Oh gosh! I always, always lock mine!
It's not just things being stolen from the case, but there's always the risk of things being put
into your case, drugs and the like.
Try explaining that one away at security!
No matter which country I'm going to.
I even lock it if I'm travelling in England, the only exception being if I'm going by car and so would have my case with me all the time.