Well, I can only go by experience but I've now flown, probably, something like 3000 sectors in my business existence and I've never had anything lifted by these "light fingered" baggage handlers. Like I said earlier I also, quite regularly, put my €3000 laptop in my hold baggage and it's always there when I collect my case.
Baggage theft is over estimated by the travelling public, it does happen but it's very rare.