I tried the Zen browser for a week. At first, I really loved it, and kept raving about it to my co-workers. And then in the span of a single week, they made two completely bone headed design changes, with seemingly no direction or plan, and I knew I was out. I remember one of them was a floating address bar, but I don't remember the second, I just remember even the options to revert back to the previous behavior only half worked.

"Wouldn't it be neat if" is ok for some projects, it's not for a tool that I rely on so heavily to be consistent. I also liked Brave for a bit until I ran into a render engine/compatibility issue and when I checked the patch notes realized it was just run by Crypto-bros.

For now I'll stick with Firefox (profiles for Work and Personal) and qutebrowser (because keyboard is 'the way').