1. They prefer tactics in the manner that they like to have everything thought out, rather than just charging blindly into combat.
2. Quasi-Souls believe themselves to be inferior to other forms of life, those that are not in the "limbo". They prefer to stay hidden with others of their kind, but that doesn't mean that the monastery priests will turn someone away in their time of need, as long as they who they help does not mind their presence. Nor will the cult acolytes just stand by when there is a perfect opportunity to slit the throats and chop the heads off their "superiors".
They prefer to stay hidden, but will come out if they believe they truly should.
The nations of the Kolm surpasses all other barbarians in their wilderness of life. Thoug they do just bear the likeness of men, of a very ugly pattern, they are so little advanced in civilization that they make no use of fire, nor any kind of relish, in the preparation of their food, but feed upon the roots which they find in the fields, and the half-raw flesh of any sort of animal. I say half-raw, because they give it a kind of cooking by placing it between their own thighs and the back of their horses. They fight in no regular order of battle but by being extremely swift and sudden in their movements, they disperse, and hen rapidly come toghether in loose array. They spread havoc over the vast plains and flying over the ramparts, they pillage the camp of their enemy almost before he has become aware of their approach. They are the most terrible warriors for when in close combat with swords and flails they fight without regard to their own safety, and while their enemy is intent upon parrying the thrust of the swords, they will entangle him with their chains so that he loses all power of walking or riding.
Excerpt from "The peoples of the world" By Taklamarian court-scholar Guliman Amon.