I tried to get a look at ICAO Doc 9432 Manual of Radiotelephony but they want to charge for the privilege. I therefore presume that their ICAOships don't particularly care whether we have access to standard RT or not.
Heh. OP is rendered somewhat moot if your presumption is on track.
FWIW:
I am taking a peak at the 2007 version of 9432, and find the who, where what model to be badly missed in the instructions version. ICAO, IMO, collectively have it dead wrong in terms of language logic. The core sequence around which radio comms are built is
who, where, what.
Putting
what before
who is arse backwards. (I refer to examples 3.3.3.3 and 3.3.3.2.)
With that said, I have heard it done that way before, and I understand how it works.
To answer the question: It does not appear that the preposition is all that important in the ICAO example responses from the aircrew.