I spent the last weekend on epoxy flooring in my shop. I used the Rustoleum Rocksolid polycuramine kits, sized according to their guide. I did 1/2 of the 980 s.f. floor with one 2-car kit, added an additional 20% flakes, and more than adequately covered with Rocksolid clear coat (1 kit per half) with added grip modifiers from Valspar (1 pouch grit per pouch of clear).
I prepped and prepped, scrubbed my new concrete floor with TSP, rinsed, then with etch, then rinsed 2x... that's a lot of scrubbing and rinsing, and I had to do most of my clean up with the wet vac. Several days of work. I expected flawless results at that point, of course.
In the end, the surface itself was pretty good. The cured epoxy seems very tough. The color was streaked, as the epoxy seems to change shade as it cured and coming back to overlap left visible differences. Coverage is good, right on the money. Sharpie marks that I made to index my progress rose right through the epoxy to the top.
The clear coat went further over the epoxy base than the epoxy did over porous concrete. I have no big complaints about the clear except that it is hard to see and hard to judge how thick it's going on.
We'll see how well it holds up. I think I did adequate prep, so I have high hopes. Once I move all of my stuff in and set up shop, I doubt I'll see much of the imperfections, and if I can I hope to be to busy doing shop stuff to care.