I do like the convenience of having the passthrough that I can use as a normal battery. I was more instructional vs. warning. Little of both, maybe. The passthrough does save those smaller batteries for when you are out though and if you like regulated, the 808 ego is not. It's 4.2 off the charger. The 900 mah will spend more time in the 3.7v range than unregulated kr8s. If you are looking for regulated 3.6v, you might be better off with the bloog passthrough.
One thing to say about their trifecta is it offers a one year warranty. Pretty much covers the average life of a battery anyway. Kind of neat that it's a manual but you can put it in auto mode. Expensive....but still cool.