I have been thinking of expanding into gumpaste. However, I heard it doesn't taste very good. Does it taste any better or worse than fondant or royal icing? Would I need to suggest that people not eat it? Is there a fairly good tasting recipe?

Gum paste is the equivalent of fondant or royal with gums added to aid with drying time and strength.

It tastes like necco wafers--dry, sugary, maybe some aftertaste.

I personally think it's a waste of time and ingredients to try to improve the taste. It just isn't that important and when you tinker with the recipe, you may get something that doesn't roll thin enough, dry fast enough, or act strong enough.

Gum paste is edible. Technically, when you add wire, toothpicks, artificial stamens, or inedible colors, it's no longer edible. Attached to lollipop sticks or spaghetti, it becomes edible again unless the other no-nos are present.

HTH
Rae

Gumpaste is used to make flowers and figures and dries rock hard. While it is technically edible, it isn't meant to be eaten, therefore it doesn't matter what it tastes like.