2. three levels of contact, Casual, Detention, and Arrest.
Police officers are free to speak to anyone just as you and I are, they only fall under restrictions when they have RAS and step to detention stage and beyond and that is how it should be.
I am nor should any citizen be offended by an officer saying hello etc.
There is no doubt that going from Casual to Detention would be an easier path for an OC person as they would have "visible means" to be a safety risk to the officer. That does not satisfy RAS however, it would certainly be a portion of it if a person did or said something along with it to indicate criminal activities might be a future or past concern.
For a lack of better terms, OC is not justification for RAS alone, however it can most certainly be a piece of it.