Just as an FYI, Seal-Krete Epoxy-Seal is an acrylic latex concrete paint with approximately 2-4% epoxy resin. It is used as an additive to help promote better adhesion and durability than standard paint. It is not a true 2-part, chemical-curing epoxy coating, nor does it perform like one. It has always been marketed as an inexpensive one-and-done single-application garage floor paint and not intended for a clear coat. However, due to demand by the less aware DIY consumer, manufacturers have begun offering water-based acrylic clear coats that are compatible with these types of concrete paints. These clear coats do not resist solvents and car fluids very well. They can stain and occasionally smear when cleaning since they can soften depending on the chemical introduced.
True 2-part epoxy clear coats and other higher-performing coatings are not compatible with paint unless proper surface prep is performed after the paint has dried. Even then, only water-based products are recommended since many higher-performing clear coats contain solvents that can soften the paint during application.
Performance is OK if the garage only sees foot traffic. However, it quickly declines when vehicles are introduced. The most common complaint is hot tire pickup within a few days to a few months after application. If budget is a concern, we recommend using only the paint. That way you can easily touch up if it gets scratched or tires remove patches of it. Introducing a clear coat makes touch-ups difficult.