I purchased and installed a top-of-the-line (supposedly) Wolverine product three years ago. Spent 22 hours pushing a dual-disk grinder on a three-car garage floor. I don't think concrete was ever floated properly, hence giving it a non-slip texture. It made grinding it smooth an adventure.
The product purchased was supposed to be UV resistant and basically bulletproof. I was sceptical but drank the Kool Aid. It too did the top-coat yellowing like above, and does not hold up well at all to welding, scraping, etc.
If I was to do it all over again I would still grind the floors. Grinding makes the floor so much easier to clean and comfortable to stand on. Then I'd stain it in multiple colors so that it would help to hide the inevitable stains. It may also allow for future acid cleaning and re-staining at a fraction of the labor cost of removing and recoating an epoxy finish.
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