Nobody will probably read this anymore but I had the same problem and used the same solution - starting my browsers as
$ google-chrome --profile-directory=customera (nice dark theme, custom list of extensions and corporate bookmarks)
$ google-chrome --profile-directory=customerb (yeallow-blue theme to stand out)
and a session for my own stuff / firefox with --profile with custom proxy settings to tunnel via a socks around customers corp mitm proxy
That being said, I spent my free computer time working on a server runtime(nodejs) + extension kombo (big thanks to talented folks helping with this project!) which can sync your tabs based on the context you are in - lets say /work/customer-foo/dev/task1234 would index all your tabs for task 1234, but that path is actually linked to bitmap indexes, /work/customer-foo would show you all links for customer foo, if you'd create /work/dev it would show you all tabs that are indexes for work AND dev
anyhow sorry for spam, good to see people are struggling with the same UX problems I've been :)
and a session for my own stuff / firefox with --profile with custom proxy settings to tunnel via a socks around customers corp mitm proxy
That being said, I spent my free computer time working on a server runtime(nodejs) + extension kombo (big thanks to talented folks helping with this project!) which can sync your tabs based on the context you are in - lets say /work/customer-foo/dev/task1234 would index all your tabs for task 1234, but that path is actually linked to bitmap indexes, /work/customer-foo would show you all links for customer foo, if you'd create /work/dev it would show you all tabs that are indexes for work AND dev
anyhow sorry for spam, good to see people are struggling with the same UX problems I've been :)