I think that when it comes to security of objects stored on the motorcycle - whether in panniers, top-boxes, soft bags with a PacSafe mesh over them, or otherwise, one has to take a multi-faceted approach to security.

By that I mean where you park the bike is every bit as important as how you secure what you have left on the bike.

If the bike is parked in a secluded location, even the contents of aluminum Touratech panniers or steel ammunition boxes that are locked up with $100 padlocks will be fair game to an interested thief - this because the thief has the opportunity to take all the time they need to pry the containers open with little risk of being spotted by anyone else.

On the other hand, if you park the bike in an attended lot, or park it in the middle of a whole bunch of other bikes (in an area where other riders are coming and going frequently), soft luggage wrapped with a PacSafe is probably quite secure, simply because a potential thief has a very high risk of being "caught in the act" by the lot attendant or other riders.

In other words, "adequate security" is the result of a blend of several considerations, of which how well secured the object is is only one component. Where you park it, the time of day or night, and what effort you make to ensure the bike is monitored (e.g. tipping a lot attendant ahead of time) are other considerations.

Michael