I wouldn't worry too much. I had probably about $500 worth of knives in my luggage at some point, which was nothing in comparison to the $2000 camera equipment (putting that in you hand luggage can be a major issue as well). I am mostly worried about lost luggage, but not very much about theft. Btw. you can always drill a couple of holes in the lock and lock them with zip ties. That is legal, and nobody other than the homeland security will touch them. And I trust them not to steal anything.