Do IMITATOR CHASSIS drones choose a heritage?

[SITZKRIEG!]

Just curious if imitator chassis drones from the latest playtest get to choose a heritage. Admittedly, most of the time the difference will be asthetic but in the case of some like the barathu it change change the size of the drone from small to large depending on which heritage whereas the "base" barathu entry is medium. The text for clarity:

"Special Your robot companion was constructed to imitate
another ancestry. Select one ancestry. Your robot companion
is the same size as the selected ancestry, has the same Speeds
as the selected ancestry, and it looks identical to its chosen
ancestry, with a +2 circumstance bonus to its Deception DC
to Impersonate the chosen ancestry."

[Squark]

No, there's nothing to suggest you can do that. I supect that was omitted in part because it would open the door to whether an imitator drone would also get access to the heritage's speeds.