I dunno. Aside from the (usually) higher price of the ribbon, when you compare a well designed dome or ring rad tweeter in the $50 range from a company like SB Acoustics or Vifa for eg., they appear to have a much smoother freq response than charts of much more pricey ribbon tweeters in the $200+ range and nobody can hear anything anywhere near the freq the ribbons go up to, anything over 20khz is pretty much irrelevant.

Half of communication is listening. You can't listen with your mouth.