Painting question (maybe a dumb one) (1 Viewer)

[Dezbelief]

Well yeah, my home improvement skills are fairly minimal so I will not be taking off the door and would be painting with the door hung.  You think there will be noticeable difference in appearance?

I painted my door this summer. I used a half dozen of those cheap foam brushes because I didn't want brush marks on the door. I've seen a couple doors with excessive brush marks, yuck. It did take three coats. It was a metal exterior door. I spread it out over the weekend so the wife would think I really worked hard on it. It was much easier than I thought. 

I painted mine hung. After you finish a coat go back after a few minutes and look for drips, I just smoothed them out with a brush. The pride you feel walking through the door admiring your paint job is worth much more than the $400 you save.