I decided to alternate chocolate cake layers with a vanilla layer, and used a chocolate pudding filling.
While the tool helped to make a very even-looking cake, and the three layers looked really cool when sliced... I have to say the pudding was a little goopy inside, and left the remaining cake and slice a teeny sloppy looking.
perhaps a thicker filling or using a hot knife to make the slice? or having the cake be cold at the time of cutting? maybe it's something that can't be helped... or I just need to learn to cut a slice better. not really sure.. but it's something I certainly don't mind investigating a little further.