Not really, evasion is a continuum rather than a binary distinction. So Omicron seems like it evades immunity acquired from infection with previous variants or

Not really, evasion is a continuum rather than a binary distinction. So Omicron seems like it evades immunity acquired from infection with previous variants or vaccines to a certain degree, but from what I have read with vaccine + booster you are still ~60-80% protected from symptomatic infection and almost entirely protected from severe outcomes.