GK430
You are quite correct. I joined Air Two Bob on day 1 and I recollect spitting out crew food, and our elongated callsign, simultaneously in the early days.
A competition was held to come up with a company c/s and it was won by the secretary(CQ) of one of the bosses(AK).
I know we cringed for ages until we got used to it. Other airlines certainly took the 'you know what'!!