Sounds kinda silly. Different ammo in different mags would make more sense. Personally, I think your average JHP in your caliber of choice is the best way to go for most folks. If you are so worried about ammo that you alternate rounds in your mag, you spend WAY too much time on gun forums. In all fairness, I have had multiple types of ammo loaded in a mag before, but it was a specific use case. I would carry a pistol with the first few rounds in the mag being "snake shot" when hiking on my family's property in SE Ohio due to the number of copperhead sightings.