Based on the posted feedback, and what I've gotten via PMs, I think this is going to be a freeform game, not a system game. I won't be using the ASOIAF rpg rules for this particular game.
However ... I can't say this will be a truly systemless game. While I'm fine for freeform play in terms of social interaction (and, to be honest, prefer it), that simply doesn't work for me when swords are drawn. I don't like the idea of "narrative combat" - there needs to be a more formalized structure for it. If two characters wind up fighting each other, I'd like something a little more intricate than "roll dice, high number is the winner."
I think only characters that expressly have combat experience would need this system. For example, the way I imagine Manfred's sister, she's something of a lazy, drunken lush - she's barely worked a day in her life, let alone picked up a sword. It's safe to say that if a hedge knight pulls a sword on her, she's dead. The combat system-stuff would only apply to characters who would logically have in-character experience with weapons and fighting, based on their background.
I'm going to see if I can put something simple together, and post it here later tonight.
For those who wanted a system-based RP, I hope this might work for you. If not, I completely understand, and I thank you for your participation and input.