Agreed. Even in worst-case scenarios, 2 is still greater than 1 (unique browser). Although the number might literally be 2! LOL. Regular TBB, Tails users would have to be operating behind a Tor Gateway and know about TOR_TRANSPROXY… Even then, more likely to use Firefox to evade tor bans.
TorProject is going to have to address usability/security concerns with these Tor bans… My thoughts continued here: Cloudflare as a Security Risk
Try Whonix in Qubes. I’ve got a Workstation just for whonix.org, qubes stuff, general linux questions (ie stackexchange). No sweat. Can setup Gateways / Workstations with different firewalls, proxies, etc.