This is my batterygraph (graph lol). Smartreflex was enabled around 21:00 March 31 definitively.

I can definitely see battery improvement, you can also look at the slope angle.

The 4-5 days before that i was switching it on-off, playing with swappiness and other things that i cannot however precicely time.

PS: green is wifi connection, red is gprs/3g



PS2: I have only used echoing to set smartreflex, and have set vdd2 first as per the recommendation of a user on this forum (cant find the thread again).