Alan Gura posted the memo that went out the DC police officers about how to handle carry situations. He specifically posts this important detail with the memo:
The District has indicated that they will seek a stay of the decision. If a stay were to be granted, this policy would doubtless change, and I canâ€™t guarantee that Iâ€™ll be able to update this blog post in real time. So be careful out there.
Looking at the memo and the scenarios they outline, it does appear that anyone caught carrying will have all of their information taken down and the police will pursue “potential further investigation” even if they are perfectly lawful to carry at the time they stop you.