Anybody who puts that silly Hornady "Zombie Max" ammo in their carry gun probably drank Billy Beer and orders sets of hand-painted Franklin Mint 50 state quarters to use in vending machines.
It's frivolous, a gag, novelty ammo. And while any situation requiring you to actually bust caps with your CCW gun will probably be novel, it will be about as far from frivolous as anything you ever do in your life.
I know everybody has their hypothetical self-defense scenario in their head: The bad guy jumping out of the van with no windows in the grocery store parking lot or the convicted felon with the neck tats and wife-beater, carrying a stolen handgun and climbing through your broken window in the dead of night.
Nobody's hypothetical scenario ever seems to include getting beat down by a moody, unarmed teenager who reacts belligerently to "Hey, do you live around here?" In a case like that, do you really want to be standing over a cooling corpse with a gun full of joke bullets?