I imagine that you could do something similar to RY4 with their caramel, vanilla, and toasted almond. I don't have their caramel yet, but the other two are pretty strong, and
I find the toasted almond to be somewhat similar to a nutty tobacco flavor.
I'd probably try something like 13% caramel, 5% toasted almond, 2% vanilla custard. I've done about that with LA caramel, and it was good.