a pity. i always get annoyed as hell when someone parks an overlord over my command post, esp if im toss cause it takes ages to get dragoons esp when u consider that zealots are cheaper and are a better anti rusher
i never did that might try it i always belived in protecting ym overlords plus i dont know where to put him exactly to prevent them from selecting the building.
well, it has scouting purposes. like if you see them building 2 gateways right at the start they are probably rushing, but a gateway then a cyber prob teching.