Yeah there is a bit of lag. The notifications are the same as before, but now have the option to reply in the WhatsApp WearOS app...plus can look at chat history etc... Seems ok.
Yes, certainly and the sad part, we might be soon losing it for the 🇬🇧 UK customers due to our strange new laws coming in. Apple have more or less confirmed that fact, wether if IG and Facebook plus messenger follows, who knows.