I have two questions for anyone who has used either a one or two part concrete paint...

Most abusive thing to the floor will be jackstands/floorjack. I expect to have to touch it up from time to time. Is the added durability of the 2 part epoxy worth the hassle of mixing parts A and B everytime I want to touch up something on the floor? Another concern is "hot tire pick-up", as I am constantly pulling someones car inside that all arrive with hot tires.

Second question, and it's kind of a crazy one. I have ruled out Race Deck (too expensive) and actual tiles, as the floor is concave- id surely run into trouble getting them all to line up. Paint is my only option, and I'd like to have a checkered floor. Assuming I was dumb enough to spend the time to paint the floor white, then painting each individual black square, would it be practical. Is the paint "brush friendly", or is slathering it on with a roller about the only option?

Thanks for any ideas, suggestions, etc
Greg