We've used Ardex moisture stuff and I was trained both at the union school and by their tech reps on site. I never saw anything like the Koster epoxy from Ardex.
It's all very much a hump to roll out.........you will always need 1-2 COMPETENT men working with you.
What I remember from Ardex was they had three different mixes. The one we used they wanted us to "broadcast" sand across the wet epoxy to create a bonding texture to avoid the need for a primer for the patch to bond to the non-porous epoxy.
It's MUCH easier to just use the Koster primer-------NO F'n sand to broadcast and then sweep away. Otherwise, if you don't use the sand Ardex wants you to use a 2-part epoxy primer for the patch to bond to.
That's not in any way economically feasible.