The only problem I see with that, is that it costs the same as a booster, but doesn't come with any batteries At least the booster uses your current configuration (assuming you already have an ego). You wouldn't have to buy a new charger and batteries to go with your new VV e-cig. I like how it's just an add-on you don't have to use if you don't want to. Kinda like a cone. You don't have to have it, but it can help