I am also not an attorney, but I will add one thought on this topic.
FOPA provides an affirmative defense at best. This means that you are more likely to avoid conviction, or have any conviction set aside on appeal. Of course, all of this happens after arrest, booking, arraignment, bail bond, and trial, perhaps by a year or two. The attorneys you will be paying for your defense will have a strong defensive argument on your behalf.
Winning the war is good. Losing the battles is not so good, and terribly expensive.
Much better to avoid any need to exercise an affirmative defense! Much better to avoid any need for defense lawyers, bail bondsmen, repeated trips to court appearances far from home!