Got mine, ordered two. First one was DOA, no way to get it working. Second, started dripping at 4 Volts, after braking in very nice vape. Then I prepared a pump cart, taking the small filler ball out, and with a stanly knife shortening the part who goes into the tube of the ato a little. This rocks. best ato I ever had. But OMG. this ato eats juice like a giant. Dripping no way, you find yourself with the bottle all day in your hands.
Didn´t try them but a few hits with the bottom feeder, because have only a 3.7V. But with the pumpcarts on 4.1 Volts under load, I love them. The pumpcart gives me a far better control over the amount of juice, because these tend to be too dry or flooded with a BF, but could be just me.
. I'm not sure how well the juice feeding will be.. Atomizers can burn out very easily with dry burns, and with dual coils it's going to get rid of juice awfully quickly. So, like what has been said, you will always be teeter-tottering between flooding and burning.. Looks like a lot of fuss, I'll stick with DCCs 
