That would work well too. I just have the pig tail from Gerbing connected to the battery and coming out right above the left side fake air cleaner. It stuffs under the seat when not in use. I have my heat troller velcro mounted on the top of my tank bag (or stuck in my pocket when not using the tank bag).
One other positive feature of the heat troller is that the blinking LED can be left on to simulate an alarm system when your bike is parked. If your jacket is unpluged, it doesn't draw any current. Note you need to remove the label on the heat troller for this ruse to work ;-)