Hm, the GEOLod wokred the otherway around to what I though it did.. But if you make a dome or box, with a totaly transparent texture, you don't see whats behind it, say a tree, a building, or a person..
It makes it a bit more fair, as that bit of the building disappers, it wont be very obvoius form a distance, but you might notice if it appers infront of you.. A bit fairer than a gun walking towards you..
- Ben