For general use, I just don't have separate enough use-cases to weigh up against the organizational overhead. Most of my entertainment-stuff happens in RSS Readers anyways and the rest is pretty much just programming-related, so can all stay together in one browser profile...
Chrome makes it really easy to switch users. For IE development I have to use a workaround with Sysinternals "runas" and multiple Windows user profiles - at least the same workaround works with other programs as well e.g. Outlook.
Good tip on the creating local users though, will definitely do that for webdev!
Sorry, I don't remember what it's called and I'm not at my computer at the moment.
And thank you for bringing this up. I never thought of doing it your way. I might just start.
Well all I wanted to say that there are not many people who will need such browser in real life, and some people already have some workaround, which they prefer. and probably others will download and use this. (just my view)
I have a Chrome user account attached to my main Gmail account. I've created another Chrome user account that's tied to my school email, so that I can keep school-related things isolated to that account. But I can operate both Chrome account simulataneously without issue or conflict; I just set the theme of my school-focused browser to match the school colors. It takes very little effort and so I wonder what's the point of using a separate niche browser?
The multiple Chrome user system is especially useful for web development. I'm not a fan of having 20 webdevs plugins (such as React's special debugger) running on everything that I visit. So I make a new Chrome user just for dev plugins, with the devtools configured exactly as I need them. Sometimes when I'm debugging a live site, I need a stock browser experience (I.e. No Adblock)...so that gets its own Chrome user. You don't have to set up a new Google account to create a Chrome user; that's only necessary if you want your plugins/settings to be stored in the cloud. Otherwise it's literally a 3-click process to create new users and switch between them.