I have been able to install Chrome apps in Edge, with no problem*. How do I install Microsoft Store apps in the Edge Chromium beta? It always defaults to installing the app in "old" Edge.
* - I say "no problem" which is mostly true. The exception is the 1password extension because it will not link to the 1password desktop app (likely a certificate mismatch issue). The 1password X extension works fine, since it doesn't need to communicate with the desktop app.