I would do that myself when I go in to the freedom permission slip and tax review board, but in Oakland County, the meetings happen in a building containing a court room. Remember, courts are a separate issue from preemption, so DON'T carry in a building with a court room in it, with or without a CPL.
If the board isn't meeting in a building that has a court in it, and you can transport your gun there in accordance with state law, I believe you should be fine. Remember, they have no choice but to give you the permit if you pass the background check and give the tyrannical state its extortion money. The key term here is "shall issue".
(Not a lawyer, could be wrong, but that's how I understand it)