While mine is not quite as beautiful as theirs, I'm sure it tasted just the same. Of course I did not include the same cake ingredients the recipe called for; rather I substituted with a box of Betty Crocker's gf chocolate cake mix. Our friends were eating it up (gf and non-gf alike). I think it's safe to say that the cake was a hit... friends were even putting dibs on the leftovers (which there weren't very many of).
My suggestion of the day: modify your favorite non-gf recipes when possible to compliment your gf diet. Don't frown at the site of a delectable cake in the bakery's window but instead, find away to make it work for you!