Hello again.
I hope I'll bother no one by bumping this up again, but I've been thinking 
about Criamon 
.
it happened serially, but also in parallel, so I hope I will be clear. Sadly, I didn't have time/ energy to review my books properly, so I hope I won't make too grievous mistakes.
I thought logical to give him a Fast Lesser Domain in Warping, which shifted into a Fast Lesser Domain in Vis, so maybe he had both 
.
-
Warping seems logical. But I noticed that Hermetic Magic can cause Warping (Cr Vi), maybe detect it (There's nothing saying InVi base 10 can't give a rough idea of one's warping Score. It can detect the Gift, after all), but not destroy it ( PeVi) or move it around ( ReVi), probably because of the Limit of Essential Nature
.
But there is another Technique.
One which plays with, and around, Essential Nature. I am speaking, of course, of Muto. We also know that Criamonbrought Twilight to the Order, and that it was an improvement over what existed before. What if he cast a powerful non-hermetic Ritual, similar in Target to Curse of Thoth ( HoH: TL p 76), to change how Warping affected the entire Order?
In that case, the Hypostasis (HoH: MC p46 wasn't so much found than created by Criamon. Reading the Curse of Thoth, I Wonder… What if the ritual slaying of Criamon primi ( HoH: MC p55) serves to reinforce this ritual, ensuring that, for the Order members, warping continues to manifest as Twilight?
This, obviously, begs the question: What was the alternative? House Criamon believes that "Warped magi simply died" (HoH: MC p 46). [This is taking me too long: 1 hand, so my fingers ache, and I find my eyes watering from staring at the computer) combined with the bit about Criamon's master "attempted to improve his student through two decades of torturous rituals" gave me 2 ideas:
His Master warped him, hoping to change him into a sort of Magic Human, and Warping caused wounds. If, say, you had to soak 3* ( warping score + warping points gained)+ a stress die, everything falls back into shape^^. -
Vis came from a Warping "fork", in which, like in Mirarion ( remember that discussion?) the corpse of Magi contained vis, for a number of pawns equal to their Warping Score. So, maybe Criamon's master just wanted to "ripen" him
, until there was enough vis to harvest in his corpse? This, once again, would almost make sense, given what we know.
It ended up as Criamon being the one who brought Vis extraction to the Order 
That's all for now, folks! For now, at least.
I hope you enjoyed reading me. One day, I'll propose a model to create " primitive tradition". But that's another day 