2-fac with Google Voice number. 2-fac Google account with normal number. Does that work? You'd have to compromise the Google account and for that you'd have to

2-fac with Google Voice number. 2-fac Google account with normal number. Does that work? You'd have to compromise the Google account and for that you'd have to best the actual phone. I don't actually use this but is there a good reason not to do this?