We can agree, no matter the scope and bulletproof practices of NASA, NNSA, AN, MilStd, and such, those cover environments no where near concerns of NEC and local codes.
On the skin, it would be convenient for an umbrella-like code, but physical differences make it impractical.

First exposure to Western Union splice would be earliest of the 70's, Peterson Publishing shop manuals, and edition concerning auto wiring. Made sense then, done so ever since. Same for terminals, crimp - solder - sleeve.