AHA! it DOES work!!
In an attempt to be more quantitative I used an app (Speed Logger Free) which is an android app that can export speed to CSV which you can load in excel and plot speed and accel
Doing so, comparing just electric, just engine and combined engine/electric it's CLEAR who's the winner, it does in fact translate to much better acceleration than either alone, with no effect on top speed since maxxed engine is >> the electric.