OK, well to update the progression, Wingman scissors didn’t work either.
Vic scissors do work! The lock tab doesn’t work as you would think, but it does work. In fact it works perfectly; not for keeping the scissors from closing, but for keeping them from opening too far.
Here, you can see(I hope!) where if you open the scissors, and hold the tab down so the scissors clear it, how they open too far.
And here, you can see how if you just let the tab pop up, it catches in the side of the tang, and provides a over travel stop. It actually does keep it from closing, but not solidly, it has some flex to it. This set of scissors is cut perfectly to fit on a Wave, later I will get a new set to cut to better fit this frame.