The mustard based sauces are fine with me, as well. As for your cousin's sauce, sight unseen and untried, I will go out on a limb and say I would be happy to try it.
Like I said, were I rich man, I'd also be a fat man...so many barbecue shacks, so little time!
Just struck me why Pat's wife stays with him...it ain't the beard, she likes his butt!