No plan to make this work with how the buffs currently work - on both my toons I never got one, so never figured out how the buffs actually work - so I made an assumption, which was incorrect. You're better off looking for another WA which tracks correctly.
A WA that detects the roles in your party and displays what bonus you will get from having Whispering Incarnate Icon equipped.
_should_ check for buffs on party members too - cant test it right now, please leave a comment if it does/doesn't work