You are making a mountain out of a mole hill with your "borrowing" scheme. You don't think if you did something nefarious, made a mistake or had an accident with a drone that had a "borrowed" number on it, they wouldn't find you? It would be easy, no matter what you had labeled on your aircraft. You would have to plan and take some extensive precautions to NOT get caught if something happened.
The other end of the spectrum is if someone grabbed your number and used it, you could easily prove it wasn't you, in about 5 seconds. Again, it would take some serious planning to implicate someone else "Gone Girl" style. You sound like a broken record , Gadget Guy.
SD