Parallel Installs

That worked, but what if the app is already installed?

$ sudo snap refresh 
error: cannot perform the following tasks:
- Set automatic aliases for snap "firefox" (cannot enable alias "geckodriver" for "firefox", already enabled for "firefox_beta")

Edit: Uninstalling and reinstalling worked so far.

Would there be detriments for having multiple Firefox instances and one of them installed using the --unaliased flag?