I got them in the style of my black templars, because they looked awesome. I'm going to see about using some clear red paint to fill out the crosses so they don't disappear on the table.
When 7th came out, they were rendered a bit obsolete, but Scott quickly produced the 5 and 6 so you could use them to mark the 6 maelstrom objectives. He sells these at a killer price, and I heavily recommend them if you want a nice and easy to read objective marker solution! I am going to be repainting mine soon.
P.S. Is it me, or does even a simple blog post take a lot of time...