WebOS notifications are nice because you can swipe away individual notifications. But they also take up more screen than on Android (which matters because Palm/HP loves tiny phones). I'd say it's a push overall.
Ideally, swipe left to dismiss, swipe right to dismiss for now (still listed in the notification "tray").
It does this if you don't swipe it away and you interact with some other app. So, if I'm writing an emial and a text message comes in, it will show up with the full notification, but if I touch the email again, it will show the tiny reminder icon.