I finally gave up on rcs and I'm on beeper now. I had one or two friends that it just never works with and there is no way to disable it per conversation so I was unable to talk to just those people. Hopefully when beeper adds rcs soon it'll be better.
I can't overstate how big of a fan I am! There are certainly a few rough edges (particularly with attachments and gifs for text convos) but other than that it's been great. I use the iMessage integration but only with one friend cause I've been nervous to rely on it. The devs are really good at communicating when there is an outage which gives me a lot of confidence.