@hartattack Yes! Looks super awesome, I have Raspbian/RetroPie/Kodi on the same Pi3. I’m a beginner so it took me a while to set it up and configure but yes it’s pretty easy. Check out multibootpi.com and just look through the builds until you find one you like. I recommend using one that has a video walkthrough because there is some nuance.
I’m installing a switch to more easily toggle between the three, but as of now it’s very very simple to switch between them with the help of a keyboard and mouse, or just using the command line.
I even have a tv mount that swivels so I can rotate the screen landscape to play games, and then rotate it back to portrait for the mirror display, really like how it turned out so far