Im in it as much for the novelty and experimentation as you are at this point. I've done some short EOC lights on coasts (1-3 minutes), but noticed that if the hill is long enough and steep enough for longer coasts, I'm running out of brake vacuum anyway. For my car, I get 1-2 strong brakes after going EOC, 1 moderately good brake, then it takes a lot of work to brake. Given that night is the time with the most wildlife and my vision is the most limited, that's just not the time I want the weakest brakes.
I still want to go to LED tail and brake lights, LED daytime running lights and HID headlights in the long run, but only after I've added a PVC vacuum reservoir and electric vacuum pump. Even still, it's only going to get me through spring and fall commutes; dead of winter I need heat for a clear windshield and comfortable driver.
