The profiles are fine it's the lack of integrated GUI that kills it. Just need the ability to launch a different profile in a new window from an existing window and it'd be all set.
It drives me nuts because I have things in FF that can't easily be handled by containers and I have things in Chrome that can't easily be handled by profiles.
And no, Firefox containers are not the same, I cannot install two versions for 1pass - personal/private
Firefox also have true "profiles" but they are kind of a hack