There is a "gallery" 3 Gun match at AAFG in Annapolis on 9/13 ... They only use pistol caliber carbines (9mm AR's etc) or 22LR for rifles due to range rules. Pre-registration is required for a slot. Might be full at this point but they usually keep a waitlist. Google aafg idpa for site that has info on how to register.
Im sure a few guys at this match are using it for a FNH warm up