I realize I'm in the minority in this thread but this is really a good place to learn magnets. No, magnets do not always play well with existing morphs, but you can always spawn a morph from a magnet and then combine it with the other morph. Also, because nipples are separate materials here, you can have your magnet be quickly confined to the polys of the nipples.

Also, I think the majority of modelers over the last 10 years used whatever 3D app they had handy. Hexagon is only one of several but it's the most affordable without being free like Blender.