Wat. The cons listed on "Separate U2F token for backup" doesn't make any sense (except the last point, I'm looking at you, twitter). They assume that you have

Wat. The cons listed on "Separate U2F token for backup" doesn't make any sense (except the last point, I'm looking at you, twitter). They assume that you have your primary u2f token on your keychain and backup token at home or in a safe. That's nonsense. You should have one nano u2f token in every laptop's usb port, then another one on your keychain (and probably another one at home or somewhere). And there's no primary/backup. Every u2f token should be treated the same.