It was just okay. No strong flavor of root beer in there; the predominant flavor, at least to my palate, was garlic. I think it was more of a gimmick than anything else, cashing in on the Sprecher's name. They still sell it in the bottle in stores and on the internet.
In addition to the Sprecher's Barbecue Sauce, Q had several of their own house made sauces which I preferred.