Yes.
The main problem I have with the LPGS is that excess material spills over the back of the second blade unevenly leaving small piles everywhere that if not smoothed before packing down would make the surface bumpy and uneven.
By using this method it scrapes all the high spots from those piles and forces the gravel under the blade instead of over and is pressed down into the fines that have already dropped earlier.
The LPGS tends to leave gravel on top and fines underneath (at least on my driveway which is 3/4" crusher run). I didn't like this at first, but it actually ends up working because after smoothing when you pack it down with truck tires it presses the gravel down into the fines which then lock around it. When refinishing with a box blade most of the fines were on top of the gravel so they blew away as dust.
For reference, yesterday I refinished our dooryard (parking area for those not in NE
). Here is a picture of it halfway through the final smoothing passes (area on left is finished)