For the most part its doing well. I have been renting out the garage to a local mechanic friend, so the floor has been eternally dirty. It seems to be holding up well, with having engines and transmission dragged across it unprotected. he abuses the hell out of it!
Also the concrete, before I put the coating on, was seriously spauled. I did a skim coat of some concrete repair stuff, but it turned out to be a lot softer then normal concrete.
I have found it doesn't like acetone (carb cleaner) it softens it right up!
For the most part it has been holding up ok. I do have some extra, and I mixed extra tint that I saved, so I can patch it up later, but I really do wish I did a 2nd coat, I think it would have held up a whole lot more!
you might be able to spy a few shot of it in some of my videos.
-Mark