So far I'd say REM-R3G has a more pronounced effect when it comes on - ie, you do indeed feel an accelerated sense of being sleepy and drowsy.
It reminds me a bit like remeron in that regard.
I've slept more 5-6hrs continuous hrs before waking to get up to pee, both nights I've taken it, which is about +2hrs compared to baseline taking PowerFULL.
BTW, the first day I got it I took it well before bed, to see what kind of effect it would have on me when I was wide awake. Might be placebo or not, but I felt a little wacky on it. Not something I'd do regularly, but it certainly changed my state and made me feel relaxed and some mood elevation... I assume this would be the bacopa.
Just a few impressions - very small amount of data, so take this with a grain of salt.