I recently got a CCK to try out at work, and its been a great help. I've never owned a proper Chinese cleaver, and it fits my cutting style and my needs like a glove.
But I have been wondering how to keep it protected carrying it to and from work and when I'm not using it. A blade guard is what I'm doing now, but it tends to fall off in my bag(I don't carry enough knives to justify a separate roll, really). I love sayas for other knives, but I'm not about to commission a gigantic wooden sheath for a $40 knife.
How do you guys protect your cleavers at work?