I am fairly new to vaping. I know what is the diff between the non-mod like ego stuff. I do have an ego twist and a spinner. On mod, I have a tesla and a vamo. On mechanical mod, What I see is that they are BEAUTIFUL and can be EXPENSIVE too. They have no electronic protection like those mods at all. If there is anything go wrong, beside relying on protected battery, your hands and mouth will take the hit. I don't think people would love the look and take the risk. Please tell me what a mechanical mod can do which the mod can not. Thanks.