I've noticed that, too. Most of my clients feel no need to pay me extra to finish a blade very finely, because they fully intend to use it a lot and scratch it up anyway. Those who do prefer hand-sanded blades are usually quite happy with 400 grit. (as Bruce said, go one step further and come back down, for the crispest look)
Regardless of the style of finish, I think we all agree it should be even and consistent. One trick I use is, when I think I'm done with a belt finish at 400 or 600 grit, I go over it lengthways by hand with just a few strokes of the same grit paper... that will show up any "hidden" coarser scratches real quick. And as others mentioned, coarse scratches that are buffed shiny just look awful and cheap, like flea-market stuff.