Quick one, hope someone can find an answer for it: If a model in a fireteam gets the impersonation state (in this instance, an Umbra HD+ in a Haris), what happens? Do you end up with an IMP model in the fireteam? Do they fall out of the fireteam? I couldn't find a reference in the rulebook, the errata or the wiki.
The following cannot be part of a Fireteam: Peripherals and their Controllers. Troopers in Marker form. Troopers with the Infiltration Special Skill. Troopers possessing Skills with the Airborne Deployment Label. Troopers that activate or are in the Suppressive Fire State. Troopers in Isolated State or any Null State. Additionally, members of a Fireteam cannot be part of a Coordinated Order. As the fireteam leader the Impersonator would also cancel the fireteam.