blog post correction
A few days ago I blogged about the new Scout Sniper Observation Telescope. I said it would use the Horus reticle. According to Allen, a Marine vet and analyst at The Columbia Group, The Marines will be using a standard Gen II Mil-Dot reticle, not the Horus reticle.
As Jay (jdun1911) said in the comments of the original post a grid is not a great idea for spotting.
Thanks to Allen for the correction.

That makes more sense, I was already wondering because the Horus looks a lot like meant for the shooter (who wants to shoot a follow-on shot, too) – not best for spotting targets.
It seems to enable the sniper to remember well the relative error of teh first shot and correct it quickly with the second one.
A high end spotting scope would probably make good use of LRF, basic mil dot reticle (not in center) and color filter as extras, not of such a Horus reticle.