I had one of the Bean locks cut off...from what I read, TSA is likely to cut off even "approved" locks about 50% of the time.
I'm getting tired of having stuff obviously opened and no TSA note inside though. We have one item of my DD's that we travel with a lot, which seems to be opened on every trip (I can tell because they never put the twist tie back on the zipper), and only twice has the TSA card been put in.
My theory is the baggage handlers use the TSA as a handy opportunity to open bags and have a look around for anything valuable, figuring they can point the finger at TSA. Anyway I'm going to try the "Indicator" lock (or something like that) that shows whether it has been opened. Supposedly all of them can be picked with a paper clip in about 2 seconds, but it may discourage the random opening we get all the time now.