When I travel away from the city, YTTV bases my local channels off the city I'm in.
But I'm reading their disclaimer as even if I'm in, say New York, and have the New York local channels, they are still going to not allow me to watch the Saints game due to my billing zip code being a New Orleans address.
I ran into a similar thing with the NBA. Had League Pass and even when I went out of Louisiana to other states, it would tell me I couldn't watch Pelicans games due to "local blackout restrictions."