I don't know if this is right to ask here, but I can't find a solution anywhere.
Could anyone let me know if there is a way In UE4 to vertex paint blend between different materials instead of individual texture channels? I'm using some fairly complicated materials and vertex blending every texture is way too complicated for one material. I would assume that you should be able to use material instances and blend between those in another material, but I haven't found a way to do that.