I agree with Kendra… a Dummy cake is just as much work as an actual cake minus the baking… you still have to put in that time to decorate the cake.. use fondant, etc. etc….
and to answer the question no its not tacky to serve a bc cake when you have a fondant cake for display.. like funfetti said most wont realize anyway…..
CAKE-A-NISTA www.facebook.com/thecakebarcreator