only if you are a boring person
in the orient we constantly combine protiens
only prob is making sure that all are cooked if starting from raw state
say if you are making a stirfry, cook the different protiens separately then cook the veggies and add the meats back in
the french combine protiens to a great extent
but so do lots of different cuisines
ever hear of a surf and turf?....a steak with lobster/shrimp