I use it as my main browser on Mac and iOS since some time. It's stable enough, but there are _some_ sites that will not work. They are very few, but it happens. When it happens at the end of a long process (maybe registering) it's particularly painful, but in general it works just fine.

That was my experience like a year and a half ago too. I switched back with the new year (and also realizing it finally went 1.0 around Thanksgiving). It’s only been a few days but it’s been totally stable so far!