Unfortunately, it still doesn't work for me. I've set:
Show Previews: Always under both "Notifications" and "Messages"
Alerts: Lock Screen and Banners
I've also verified my sound and vibration settings are all on
If my phone is "dark" I get no notification but do get a buzz on my Watch, or a notification on my MacBook. If I tap my phone's screen to wake it up, I can see the message preview there, but I had no idea it came in. If my phone is unlocked and I'm looking at I WILL get a notification and text alert...but not when it's locked and not in use. So. Annoying. I really only like wearing my Watch to track exercise, but now I'm wearing it constantly for this sole reason...perhaps that was Apple's plan all along ;-)