I loved the album, and agree that it doesn't sound like St. Vincent... in terms of songs; production value, yeah, definitely hear it.
But it also doesn't really sound like S-K. It sounds like a band that was heavily influenced by S-K that just happens to also have a few synths lying around.
Not necessarily a bad thing. Let's put it this way: if this album had come out under a different name, people would be heralding it as one of the best releases of the year. I worry that everything surrounding Janet's departure will forever be a cloud over an otherwise great album.
[To be fair, though, Janet is wayyyyyyyyyyyyy underused as a musician on these songs and if this new sound is for keeps, I get why she left. If I had spent album after album hammering and providing Bonham-esque parts and then was reduced to a human-drum-machine, I'd leave too.]