If it worked well it's really nice. The problem is apps in the background tend to not update it as often as it should. So sometimes I'll have a weather alert that's 30 minutes old, along with a notification saying "please open the app for more updated info".
I thought it was only me who was seeing stale data there. It's just a persistent notification, but it was marketed beautifully. It seems to have the same problems and benefits of persistent notifications. Sometimes I will get rideshare apps leaving up their notifications long past their usefulness too.