I put the DK-17M on my F100 to take a peek and it made me feel like I was looking through my old manual focus Minolta cameras.. except without all the dust of focus screen!
Now I'm interested in seeing what a Beattie screen would add...
I just really miss the nice bright viewfinders of the manual focus cameras...
And it was just a random spark of an idea to see in the DK-17M would fit and work well on the F100... and a pleasant surprise.
But now that I think about it, one of my favorite lenses to work with is the PC28mm, so having the grid, split prism, and brighter view of the Beattie screen might be a good idea.
I really do hope that some day Nikon makes a 18mm PC lens for DX cameras.