I wanted (and got) whipped frosting for my wedding cake. But while at the tasting, the baker had a sample of cake with fondant leftover from the tasting before me so I tried it. Yuck!
I would rather have my cake taste wonderful and look good than have a mediocre taste and look stunning.
IMO, too many people more concerned than how things "look" than anything else... and that's not just with weddings.
See, now I was always told that you don't actually eat the fondant. You should peel it off the piece of cake you are served. What you actually eat, should be a good tasting cake, filing(if added), and buttercream frosting.