I used to use wet rubs on my ribs, but in reality, if your going to wrap and let em sit overnight, there is no need for a wet rub. In the morning when you remove them from the fridge and ready for the smoker, your "dry" rub will now be somewhat "wet"
Wet and dry chunks, depending on my smoker temperature. If I need heat and air is wide open, I'm not going to toss in wet fuel. I try to use wet the most. With practice of temp control, I rarely have to toss in dry wood.