That is an approach I have not heard before - very annoying that they are now using false pretenses to get themselves an open door!
an elder in my old hall would say "we are ministers of the bible" if the "householder" asked" yes but are you JW's?" he would condacendingly repeat himself: " were ministers of the bible" Another sister, whenever an Awake article was about the Flu, or heart attacks, or something like that she would say " we are volunteers in the community raising awareness of ...." so stupid!