I was excited about this series because I like Leary and I was a big fan of The Job before it was cancelled. I watched the premiere last night.
It's really quite a good show, though I can see people getting offended at the abundance of racist/sexist/homophobic opinions in the show -- these are supposed to be regular blue collar NY firefighters, so they are rather stereotypical tough guys, and don't take offense at being called mick or wop or spic. Leary is pretty good, although not out of typical form. I look forward to future episodes. There's a good deal of language and other offensive stuff; FX seems willing to push the envelope for the purpose of effective TV. Give it a shot, it's decent TV, which is saying something.
Edit: I misspelled wop.