Ultimate Survival Ammo?

My press set up to load 44 Special.

I stumbled across something the other day which surprised me. I like to shoot a lot and have done so even more in the past because of this I have saved a lot of spent brass over the years, I also like to shoot large caliber and therefore reload my own ammo to keep from going broke.
One of my favorite calibers is 45 ACP and I have been reloading from my brass stash for years. Recently I was at a public shooting range and policed up a bunch of fresh brass some of which was new Federal 45 ACP.  

 45 ACP, Top Small Primers, Bottom Large Primers.

While reloading 45 other day I realized some of the new brass had a small primer pocket (shown here at top of photo) At first I was put out, I mean 45 ACP has always had large primers (bottom of photo) and it almost seemed sac-religious to utilize the same primer as a 9mm. I did some research and come to find out more than one manufacturer (besides Federal) has gone this route and apparently police departments are buying this stuff up as well. Most re-loaders I read about were scraping the new stuff out to get rid of it therefore  avoiding confusion during reloading, others said they would reload it and use it at ranges or locations where it was not convenient to save brass.
I pondered all this and decided it makes it a unique survival ammo. I don't know of another caliber which you have the flexibility to use either small or large primers depending on what you have available.
In fact in a real crunch if you had a stash of both these types you could physically load for your 45 ACP with any large or small pistol primer or any large or small rifle primer. I believe rifle primers are a little harder to fire than pistol primers but nevertheless it could be done in a pinch.
What some see as a inconvenience I see as a benefit......just my opinion.