Analogies in the ecig world are common. Such as the one that says banning ecigs because they might be dangerous is like saying to someone on a sinking ship...don't use the life rafts, they haven't been fully tested and may have a leak. I like that and it's fitting.
One guy in this film questioning how safe they are suggests that yes they may be safer...a bit like the difference between an AK47 (cigs) and a pistol (ecigs). On the evidence we have swap pistol for a pea shooter.