I do both IMB and fondant , some fondant brands are better than others. Some things just don't work with buttercream, I don't think you can cut yourself off from using this, you'd also cut yourself off from business. It's my job to give the bride part of her dream ,that also happens to taste fantastic with or without buttercream. I had a bride tell me she hated IMB, she wanted good old fashion 10X and white lard, It's her day and her cake!