So my order finally got here. Comparing them to an authentic subzeroX they definitely look 1:1 they even have the clutch system. The differences I see so far is the switch on the authentic is way smoother and the brass version on the authentic has a copper thread piece on the authentic and the inside sleeve seems permanent on the clones and the brass version I have the switch doesn't seem to lock although the copper one definitely does lock. The switch seems scrunchy? It actually has a rubbing noise(might go away after some use?)
All in all though should be fine for what I wanted them for anyway. Bought them to use at work and other stuff so I don't damage my authentic. Also the parts are interchangeable with the authentic one.
A little polish and or lube smooths the switch as does use, one of mine had a little burring on the slots in the switch which caused a little crunchy feel. The one you have that does not lock properly is due to Kindbright making the spring too long on the latest batch, it also makes the switch a little rougher in use. Easy fix is to compress the spring slightly by bending the angles slightly. The copper ones spring is correct, and I believe they made much more copper which are still shipping from the first run.