I imagine a good number of people know this, that luggage locks where zippers are concerned are pretty much useless. This is because most zippers can easily be bypassed by inserting the tip of a ballpoint pen into the center seam of a zipper and push hard, thereby causing zipper separation and an open bag. And sealing it is simply done by sliding the locked zipper pair all the way through to the other side, so the break-in would not be easily detected.

The only practical way I know to avoid this is by using hard shell case luggage that doesn't rely on zippers. But that type of luggage poses limitations (ease of access, no ability to shrink or collapse). And the B&R Torq line is not a good design (overpriced).

Some thoughts:

Perhaps a luggage cover/sheath would be a good idea. Something that covers over the luggage most of the way, holding it tightly, while still allowing some access to a front top end compartment and handle . The added hassle of having to pull off the sheath to get to the zipper would mean too much time involved... and a potential thief would look for easier luggage instead.

Aside from that, I've also heard about securing the locked zippers to a handle, which means a thief wouldn't be able to cover their tracks (zip the bag back up) and this would foil their ability to open/close the bag quickly.

Any other viable options, aside from not checking in your bag?