I been doing this lately ( cause Im broke as fuck ) and here are a few thoughts about it. One it leads to food fatigue. It gets hard to swallow after awhile. Im sure if your really starving you will still eat it. Eat them separately, at least every bite wont be the same as if you mix them. Now I still have a huge variety of food Im just looking to save trips to the grocery store lately. And I really didnt think I would get tired of rice and beans so fast. Yes I know all about spices but they will run out before the food does. Canned butter to make the rice better. Not gonna delve deeper but just know only rice and beans wont be pleasant.