Hi Vince....Im Vince too....and in operating over the last 30+years, I go by Vince for SSB/Phone qsos, and Vin for CW qso, to keep the sending short....it's worked out well.....Contests don't usually require giving your name, but that's how I do the qsos....
Here's a ham radio and names story for ya....my late friend was a CW operator and used his middle name when working code....his first name was Seth and his middle name was David....so for SSB qsos he went with Seth, and for code, it was Dave, as Seth just has one too many DITS in it....

......Names can be tough to get thru sometimes.....
Vince P
K3NRX