We had the "Tim Miller treatment" before we moved in over 3 years ago - 3 car garage floor AND pull down metal attic ladder. I also had him do the small floor area in the AC / utility closet. The finish still looks great, holds up with spills and yes, it is slippery when wet. It takes one day for Tim to clean and acid clean the floor, next day paint, added sprinkles for color contrast, then I think another day for clear coat. You can walk on it with socks in a little over 24 hours if you have to, but will take days to dry before driving on it. I occasionally wet mop and steam mop the floor.
I've painted the floors at my previous two garages myself and they turned out just okay, but didn't hold up.
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