I do something similar with chrome users. I like it better because each 'user' is a separate window and I can color scheme which one i'm in with browser themes

I do something similar with chrome users. I like it better because each 'user' is a separate window and I can color scheme which one i'm in with browser themes. The setup takes a while initially although. Having multiple container tabs on the same window can be hard to manage & track, at least with the way brave presented it with their numbered session tabs.