Comment # 13 on bug 809557 from Dr. Werner Fink

(In reply to Egbert Eich from comment #12)

Hmmm .... man:journald.conf(5) shows 

  TTYPath=
     Change the console TTY to use if ForwardToConsole=yes is used.
     Defaults to /dev/console.

and

   ForwardToSyslog=, ForwardToKMsg=, ForwardToConsole=
      [...]
      When forwarding to the console, the TTY to log to can be changed
      with TTYPath=, described below.

don't know if this works with a pipe.