Our SOP - "V1, rotate"
Works fine, and personally, it is that call I am waiting for to announce we have reached the 'Go' speed.
If I didn't get it and just heard "rotate", then that is another thought process I dont need at that particular time.
On the other hand, if our procedure was the other way, and I got the call I was expecting, then no drama.
Just stick to the procedure for your op's. If there is nothing laid down, then a pre brief before, as mentioned earlier.