The tradeoffs are that it isn’t as reliable, so you should use it only for practice or plinking. It’s also dirtier, which means more frequent cleaning.
As far as harming your gun...think of all the Makarov and other ComBloc pistols that have run nothing but steel cased 9x18 or 7.62x25 forever. If your .45 is made better than one of those, you’ve got nothing to worry about.
Maybe.... if the commie rounds were a dime a shot might reconsider, but they are not that low compared to brass US rounds. The fact of inconsistent loading will at minimum shoot off, how’s that good for practice? Unless someone just likes to hear the POP regardless of where it hits, in that case Black Cats are a better bargain.
Will stick with cheapest US FMJs for plinking, at least WW brass is reloadable.