My latest private stock came with new latches, replacing the old brief case like combination locks with nice robust latches. The center latch has a key. I like the new latches much better.
It made me wonder if any one locks their cases. I feel like doing so would make it less convenient for me to pull out the guitar of the moment and in the unlikely event of a theft encourage the thief to wreck the case to get at what is inside and maybe damage the contents while they are at it.