re: Crackpot ASOIAF Theories SPOILERS

Just finished the reread of Cersei's whore walk in ADWD. I noticed one thing that I found strage at the very end. Gregorstein had 2 7 pointed stars clasping his cloak and he had 7 rainbow feathers pluming from his helmet. What is the point of making him religious? Was this just to butter up the faith? They did mention he took a vow of silence, but that was followed up with "until all of her grace's enemies are vanquished". So, it wasn't really a faith of the seven vow. I just thought all of it was odd.