I DL with the Entheon, but I like a slightly restricted DL draw; and I don’t have young man’s lungs anymore. Is it free, open air, like pulling on a garden hose? No. It’s a flavor atty, not a huge air ‘cloud’ atty. As for leaking, I suppose it’s possible to over squonk any side air atty enough to make it leak. But after using it a couple days, I haven’t had mine leak a drop.