No..his replacement is Zeitzler, with similar stats, but doesn't have Emergency Troops.
In my game I have over 30 of them, spread out in all the ports..
I also use them in areas where I don't want to risk a real unit. But you have to make sure you put them on 25% replacements, as they will fill up with real infantry when the ersatz infantry dies. And ersatz infantry cannot be used in real units.
They also make great invasion units as they are small, easy to supply, and you won't cry if you lose them to a bad invasion.
“My logisticians are a humorless lot … they know if my campaign fails, they are the first ones I will slay.” – Alexander the Great