If you want the best BBQ-sauce vinaigrette for sandwiches, do this:
Whisk together: 3 Parts BBQ Sauce 2 Parts Extra Vigin Olive Oil 1 Part Apple Cider Vinegar
Sorry bud, but that's a shit recipe. Two of the main ingredients in my BBQ sauce are Apple Cider Vinegar and olive oil. You can't publish a recipe that says "use bbq sauce" and expect anyone to taste what you tasted. Someone earlier posted that they used "Carolina BBQ Sauce". Well, there are 2 Carolinas with at least three distinctive regional sauces and none of them are at all like Kansas City sauces. Some bastards actually put mustard in their sauce and it comes out yellow. Other sauces are sweet or more like ketchup and many of them use liquid smoke or some other bastardization.
Fucking try it out before you declare it to be shit. If your BBQ sauce already has Apple Cider Vinegar and Olive Oil, it's probably a thinned-out sauce which is close to the recipe I posted. Use a real, thick BBQ sauce and thin it out the way I said. It's not just good, it is great.
_________________________
"Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars." - Martin Luther King, Jr.