This extension has made me move all my browsing to Firefox, it's like having multiple profiles in a single window.

For work I use it to login to separate AWS accounts. It's the same for separate gsuite.

Also, it allows me to silo some tracking sites (dedicated containers for Facebook and Google).

I already have 11 containers and there are only 8 differentiating colors which is limiting and confusing. Using some pattern for the tabs (dashed green, dotted green, etc) would increase a lot the combinations.