So far I heard two kinds of feedback: 1. It's a-ma-zing! And then it turns out they haven't really used it (much). 2. They were excited and tried it, but then disappointed (all macOS users; I guess expectations are too high). For me it's unlikely that it's going to replace macOS anytime soon, but I'd be totally interested in running it on a Raspberry Pi (which still isn't officially supported, I believe).