The original question / dilema was the sole use of the word
Expect before actual vectoring commences , since it's not found anywhere in ICAO documents in such exact manner ( " Expect vectoring ..") ... from there on everything is pretty much clear and self explanatory :
"Vectoring for ILS App .. Continue present HDG/Fly HDG etc " , you get type of expected approach from ATIS beforehand - you get track miles from touchdown at least once during vectoring - it's just the use of the phrase " Expect Vectoring ..." that i was curious about if in such exact state is used anywhere else ..
Keeping both sides in the loop as much as possible with any additional information in that regard is definitely safest way to go - no doubt about that .
Thanx for your inputs guys/gals - keep on rockin
1999