I've stolen the main text here from page 54 of the Smallville RPG but remodeled it on Qabal:
Isaac's player, James, says, "I step into the room from where I have been eavesdropping and accuse Rothschilde of stealing the Book of Raziel." He then grabs his TRUTH die and his CIRCLE die. None of his other assets apply (he is not trying to intimidate). He rolls both dice and adds them together to get his action result of 8.
Rothschilde's player, Gerald, rolls before replying. He picks up his POWER die, his ILLUMINATI die and his DECEIT die. He rolls them together and picks the highest two, getting a 12 for his result. He says, "I look Isaac straight in the eye and cooly tell him that I was out of the country until this afternoon, which is a lie but he doesn't know that."
I'm wondering whether the mechanic would work. I think it's the right level of non-violence (except when needed). I think it might drag in the right amount of other factors into a challenge. For one thing, Qabal would not suit the slap-dash mechanics of ZOMBI nor the gun-calibre specificity of The 23rd Letter. Would it suit SixSimple? I'm not sure - but the construction of Rmaps and relationships/values/connections/resources seems perfect.