Personally, I prefer the term "Sand-Nazi." It is shorter (rolls off the tongue easier), slightly more accurate, and avoids the offensive "Islamo" part (though I hardly think Muslims would find "Sand-Nazi" a particularly flattering term).
It's not about geography as in sands, islands, it's more astronomical as in moonbatology.
and avoids the offensive "Islamo" part
"A thing is, what it is." - Aristotle