>>96078322
>I must imagine the print lines are probably a nuisance for some styles of painting
If printed properly and after priming print lines cease to exist. If you were dry-brushing or using contrast you would probably still want to add a couple additional coats of base paint just to make it a bit smoother.
>does it take a lot of time for just one guy to print before post-processing?
Depends what you consider a long time and what your settings are. Higher detail settings will slow things down.