Well, DBM is saying you can use it in place of 2k. Maybe he can, but for myself and other people like me, I don't think it's practical for doing an entire car. And that's me saying that after spraying 2.5 gallons of it so far. John could get away doing an entire car with it; he's just too humble about his skill level. However, what I can't make look perfect with good metal work can look real good with Slick Sand
I still block my epoxy so I know where to fill or bump, but after getting so much flash rust coming through over time, so many of my panels I had to completely sand everything off and start over, so now I'm sure to put on another 1-2 wet coats after blocking and filling. Initially I lay down two coats to bare metal.