Displaying presenter notes without disabling mirroring?

I'm presenting at a conference this coming week, and I would like to be able to view the presenter screen on my laptop, while of course showing only the slides on the main display. The problem with disabling mirroring is that when I switch over to one of the programs I am demoing, I will then have to go back and turn on mirroring in order for the audience to see this. Then going back to my presentation I of course have to do the reverse.

This is going to be really cumbersome. I may have to just printout my presenter notes (not ideal), but that is only slightly improved from switching my screen around.

Does anyone know of a third-party add-on, or plugin or even a feature in Keynote, that will allow me to still mirror, but get my presenter notes back? That would be HUGE!!!