What he said is what I've always done thinking it was right, ie. always motoring on ALL believing both banks were being charged. He suggested I don't need to add the Echo.
I replaced the 4 D last summer and always started and motored on ALL as Ron does. I religiously turn the battery selector to 2 which is my house bank when engine is turned off on the hook.
Yes, Hawk, that's true. We have been suggesting the echo charge simply because, as Maine Sail said in the links above at the beginning of this Electrical 101 topic, the ec does what you describe automatically and you don't have to use the switch. At the risk of repeating ourselves (from the links above - see, I did it again!

), most folks don't have the discipline you do, and we suggest the B as a Backup to the ec if it ever breaks.
And, when you get on the boat you switch on the house bank, leave it there, and turn it off when you leave. Simple.
That was Brian's writeup in Reply #1 on Page 1 of this topic.
Don't forget: "get your AO off the 1-2-B switch."
That's the whole idea behind echo chargers, relays, combiners, ACRs and oil pressure switches (usually from "ye olden days of sail").