I don't quite believe in the formal infixes yet.   This could also be explained as Immediate Future + Imperfective.  er + ìy = uy 

 ::You now will be a son of the Omaticaya. 
 ::You now will be a part of the People. 

 If there was an formal infix, wouldn't the scientist who talked formal use it? Also as the leader of the tribe, he may not have to be formal while everyone else must be formal to him. Or he could very well have a high looking down on low formal language, which could be different from low (social status) looking up to high constructions. Seems like the pronouns have formality, like Japanese, but the verb infixes seem pretty standard across social situations to me from what I've heard so far. ( is a seperate subject I have my own theories about.)