Hi, we are still testing boards (and we have a bunch).  I have also built a variation of the USB BiPower that has a 3A 3.3V rail that also drives a 200mA -3.3V rail.  This should be the most power we can get out of USB 2.0 chargers.  I further modified some of the sensor boards to support alternative power trace routing through them instead of under them on the flex board.  This can allow for more optimum routing on single layer flex boards. I'll try to discuss this more later.