Hi Bama,
I have been shooting PPG 2-stage, and each time I am gonna spray, I pull out my application sheets. For the PPG base, it does have a gloss finish. The base sheets say 2-3 coats or until hiding is achieved, and lists the time between coats (varies by additives); that way, one doesn't have to flood it for coverage, but lays on coats, and sneaks up on it. For the PPG clear, it is 2 wet coats, again, so one can kind of sneak up on it. But like 56ls408 said, the base is thinner, while the clear is heavier, which makes it easier to get runs.
Good luck! Doug