Nice solution Adrian. That is 1/7th of what the standard ones draw, so definitely a possible proposition. Last night I realized there was an alternate solution, and that was the use of Nuckolls' "E-bus". From what I gather, I could even have the E-bus just on a switch rather than a relay (because the current draw would be so low), reducing its parasitic draw to zero, and just shut down the battery contactor, given that I'll already have the engine started at this stage. The E-bus will still get power, since it is on the battery side of the contactor, and I just have the essential devices such as my GAD27 trim controller connected to this bus. Then again, your solution is far more simple, and negates this secondary wiring route. I'll send you my schematic before I pull the trigger on it.
I wonder how these guys are able to make their current draw so low, as it doesn't seem to be solid state. Perhaps they reduced the spring tension, which would bring into question it's ability to handle G loads. Things for me to look into I guess.
Tom.