I also had clips by ANYbody snagged at work and pockets tried to be moved by force before knife came out and fell. The Spyderco clipit survived 75ft falls to no ill effect. I do not like clips for safety reasons plus they just feel bad in hand while working hard.

Another lock strength test video, note how the lockbacks fare against reps of other varieties....Most locks today fall into liner or frame lock, and lockback now bringing up the rear. Most "new" locks only prevent frame or liner locks from shifting. However, they do not fail from shifting, they fail from bending, which those improvements do not and cannot fix. They start bent as part of design, and just keep bending under stress.

https://www.youtube.com/watch?v=4KmHfbG7z7g

HOWEVER, what nobody ever tests is going the other way....hyperextension of blade breaking backwards over the handle. Considering most are (foolishly) marketed as weapons rather than tools today, it is something a user would wish to know, whether in a stab or slash and striking anything hard.