Been listening since it launched this morning. I'd call it typical Classic Alternative. Familiar enough for mass appeal but enough songs that haven't been played in awhile to make it interesting enough. Mostly 80s and 90s, few Early 2000s mixed in. For the Alternative crowd that listened to the format before Nu Metal took over, it should be a favorite. For people that want to hear 80s and 90s music without the pop and other rock, should be fine. For people who want to hear a AAA feel, should be an option. For the people that listened to 99X during that era, it should be like hanging out with an old friend.
The Alternative format was initially female friendly to an extent. The end of the 90s when it started going more with Nu Metal alienated a lot people. It shouldn't be a shock to hear Alanis Morrissette, Matchbox Twenty, Sheryl Crow, Paula Cole, Goo Goo Dolls, etc on there because honestly, the Alternative format is where they got their start. So this could invite that audience that listened before Nu Metal back.