Just wanted to say that I took my first 26650 battery off the charger at about 4.17v (the blue 3500 mah IMR that David sells) at 9 PM Eastern last night and have been vaping on the Shockwave exclusively since then. While I'm not a HEAVY vaper (I'd estimate 3-4 ml a day at the most), I just checked the voltage - it's at 4.03v and 3.80 volts under load (1.5 ohm atomizer).
I have experienced very similar numbers. The one thing I noticed right away, and I remember Dave mentioning this months ago, is the voltage under load is quite high and holds for a long time. I have had to increase the resistance of my coils from ~1ohm to 1.5ish. I am very impressed with the performance, but I expected that from a Super T mod.