How are people feeling about Skullgirls so far?

Skullgirls came out on PSN yesterday (as of this writing) and today on XBLA. I've downloaded it for the Xbox, primarily because I've never been able to learn much about fighting games and the expansive tutorial mode of this game intrigued me. This said, I haven't delved too deep into the game yet. How are people who are more familiar with the fighting genre feeling about this game?