Continuing the discussion from Supported Devices List and requests for new devices:
I set up an SD per these instructions pretty easily, and finally got around to taking this board out of the pi tower, removing the flashed eMMc, and putting the SD in. Unfortunately, Le Potato doesn't boot. So far only the red and blue LEDs light. Per this:
There's red, green, and blue LEDs. If the board has power, red and blue are on. If UBoot is successfully booting up, blue goes off and green comes on. If you don't have a card or anything in, you get no output at all. Just red and blue lights.
I think it's the u-boot. I flashed the image to a Samsung EVO card, and have used it to run many images across many devices. I'm going to look into the documentation more and another thread where someone outlines how they installed Arch, and hopefully find the solution.