First the good news: the Windows 10 Canary installer now automatically installs the native ARM 64bit version of Edge Chromium on compatible systems. I personally uninstalled the x86 version before attempting this, not sure if necessary.
My first feedback: OMG I CAN'T BELIEVE HOW FAST IT RUNS!! ...and how little memory it uses. My Galaxy Book2 suddenly runs ... dare I say ... well?!! Really fantastic, thanks Microsoft!
Second point of feedback: please add the platform info under Help > About. Right now there is zero evidence that the build is native, just that it runs fast. To find if it's native you have to scour through the task manager, go to the details tab, make sure the column 'platform' is showing, and confirming that it reads 64bit for MSEdge.exe. Please make that info more obvious by showing it plainly in the help>about page.
Honestly, that's all my feedback for now, because otherwise it looks and works identical to the 32bit version, just wayyy faster. If any seemingly ARM-specific issues prop up, I will post here.