Anecdote: In my experience, a small but sizeable number of homes in suburban areas that are still outside the city enough to be affected by weather-related power outages every several months have whole-home generators connected to city natural gas lines. Growing up in one of these areas, there was the occasional power outage (once a year or so at most) but I can't recall any gas line outages. Those who had whole-home generators experienced no real outage, although in a colder climate having a gas heating system and a gas stove with a backup lighter/match are definitely more essential than keeping the lights on.