Dear all,
I am indeed following the UK phraseology.The reasons to state the departure flown on initial contact may save your skinny butt one day and can find some examples on the uk caa website under level bust;-)
After a quick search on google i found this website:
SkyBrary containing ICAO recommended phraseology by EURO CONTROL...page 11.
You will see stating departure is recommended..
And calling airborne during lowvis ...there are no differences in comms whether low vis or cavok.