You could power off the Powerlet socket, You just need to remember to turn it off or disconnect it.
I've got mine set up on the GadgetGuy.net "monkey-bar" setup. He has pictures on his site of all the combinations. Mine has the Zumo in the middle, an extension and mounting plate on the left side for the Escort, another on the right side for the XM Radio antenna. Looks very clean and it made of billet aluminum and not as cheap looking (and easy to steal) as the RAM mount.
The Gadgetguy.net owner, Genna, suggested adding a Garmin Quick Release plate to the Escort. I did and I can remove it in less time it takes to read this sentence. Works really well. The old Escorts were flat on the bottom so I could just stick the Garmin plate onto them. The 9500i has a step on the bottom so mounting something flat isn't as easy. I made a small aluminum plate and use a couple of spacers to make it flat. I replaced the three screws with longer ones that attach the plate and spacers to the Escort. Works well, and I can remove it should I need to send it to Escort for repair (which I needed to do as the early ones interfered with the satellite radio).
It doesn't come with an earbud, but you can get one at Radio Sheck (it's mono, not stereo) or when you get the Autocom, just plug it into there.