You could use a script to hide the output from the status window.
Code:
; the output of the /who #channel
; Make the "do_stuff" here save the output somewhere
raw 352:*: { haltdef | do_stuff }

; End of /WHO list.
; Make the "do_stuff" here display the saved stuff into a window. 
raw 315:*: { haltdef | do_stuff }