I love Slack but Huddle is absolutely terrible. Extremely low audio quality with extreme latency (whereas I have superb quality and low latency on Meet and Zoom on same devices/connections).
It's gotten a lot better for me though latency may be a factor here. But I think it's fair to say it's still not as nice screenhero was in terms of quality and responsiveness. Which is weird because that's who they acqui-hired for creating huddles (well, presumably anyway).