So the regular recommendation is to use the Tor browser at all times because it includes no-script, https-everywhere etc by default as well as a number of other tweaks.
However I'd like to know if there's any problem with using the regular Firefox browser in Qubes-OS specifically. Basically the virtual machine is setup to use the Whonix-Gateway as it's network-vm meaning all networking is transparently proxied through the gateway. No browser bug, JavaScript, security hole etc will ever be able to leak my IP.
So assuming leaking isn't possible, and no changes to the root directory are persistent, is it safe to use Firefox (And really, any application) with Tor?
I often hear this makes me 'Pseudonymous" because my fingerprint may be somewhat unique (Private browsing is on by default so no coockies, cache or other identifiers are stored)
The only reason I can think of for why I'd want to use the Tor browser (or Whonix workstation) is because it makes me blend in with other Tor users.