Despite triple-verifying that I do, indeed, have the (currently) latest version (56), the page still acts like I'm on a desktop (I guess that makes sense...) and asks me to update to version 57.
You can use it on Android, but you need to install "Chrome Canary" (it works in parallel to your regular chrome install and does not replace or break it). The regular one won't work yet, because it still is, as you said, at 56 which won't work with C3.
I tried it on Canary on a Pixel XL and it runs. Whether it makes sense to run it on that is an entirely different discussion