Different. I often use different callsigns, because I have 2 or more Identities in a game,which I can choose if I want.
Sometimes even Manjana or another one is Dark Shadow, or even Hell's Angel (this has nothing to do with the rocker group, which is so called). But it can even be fantasy names like Lone Star. But my friends in the club call me by my airplane-name which I had to use for my visual flight speech-license (which I make next month)... It is officially D-EFID, but they call me DID ("Delta-India-Delta" in spoken form).