One of my all time favorite scenes is The Human Garbage Disposal from Messygirl so I would consider myself a BIG fan of savory WAM. I would absolutely LOVE to do one of those scenes, it's a bucket list for me for sure.
With that said, I've never had the pleasure of experiencing savory fun but I would imagine it would be the different textures of mess for me. The chunkiness of baked beans, canned corn, and peas, the thickness of nacho cheese and sour cream, the creaminess of ranch dressing, and the pillowy plops of mayonaise. Also, in my opinion, savory is next level to the sweet messes. Sweet messes are more innocent, playful and fun while the savory adds another level of extreme, nasty, and degradation.