The Virginia State Bar is stepping into the breach with a proposed change to the comment section of Rule 4.2: Communication With Persons Represented By Counsel
 In circumstances where applicable judicial precedent has approved investigative contactsThe second change to the comment is unambiguous. A prosecutor can advise officers as to the current limits of the law.
in pre-indictment, noncustodial circumstancesprior to attachment of the right to counsel, and they are not prohibited by any provision of the United States Constitution or the Virginia Constitution, they should be considered to be authorized by law within the meaning of the Rule. Similarly, communications in civil matters may be considered authorized by law if they have been approved by judicial precedent. This rule does not prohibit a lawyer from providing advice regarding the legality of an interrogation or the legality of other investigative conduct.
However, the first change is more problematic. It's very ambiguous. "Prior to the attachment of right to counsel" leaves open the question of when the right to counsel attaches. Per Montejo it would seem to attach at the moment the defendant asserts her right to counsel during questioning, whether or not counsel had previously been hired/appointed. However, during the initial pre-trial hearing the judge is supposed to determine what the defendant is going to do about an attorney, and appoint counsel to anyone who is indigent. A not insignificant argument can be made that this is when the right attaches (assuming the defendant has not demanded counsel during earlier questioning). Personally, I wouldn't mind the second interpretation too much. Since I can't be a witness, I really don't need to be talking to the defendant anyway. Still, the Bar should tighten that language up some.