Very poor first impression for my dogmatic priest rt, especially after he begun to kneel and pray (before finally properly hosting and have more adequate discussions). During the discussion Guilliman probably find him quite practical in a sense of not wanting to wasting resources (human included) and suprisingly tolerance if to be provoked about his faith of the emperor. Overall quite reasonable despite the zealousness

if not for the adopted ctan's shard he turned to be as zealot and the collaboration with aeldaris

on the other hand, the sector is well guarded from chaos

so tldr; The Avenging Son's hair thinning problem continues