Something that rarely gets mentioned is that you can hold the knife with the Armorers Tool engaging the pivot with one hand. That is a bit harder to do with a screwdriver or other homemade pivot apparatus.
Very good point. Don`t know if I would be able to assemble/disassemble a knife with just two shorty screwdrivers or something. I imagine it would be awkward trying to hold the knife, as well as the screwdrivers at the same time.