Right on, Doc!
There are a lot of ways to spell the process - the one I learned about 50 years ago was "swaging" - the process of forming a softer outer metal so it conforms to material passing through it.
Carl's swaging pliers can produce a crimp that forces the aluminum or soft copper outer tube into the steel wires making up our usual 7-strand cable flying lines. NOTE: per AMA Rules, swaging ends for steel single-strand line is NOT allowed...
His package stresses developing a gradual, smooth crimp, evenly formed around the swaged section, and it takes a dozen or so gentle squeeezes, turning the section some in the pliers' jaws, to accomplish. Not only holds very well, but looks very neat and proper.
A "factory" crimp is usually only a few squeezes with round jaw needle-nose pliers. Carl's tool forms a much greater area, with more uniform result.