This works really only on 1v1 maps or any game where you spot your opponent quickly. Its a cheese. Also its sort of bad. Use to work a lot in the beta when people sucked but now most people will pull workers to stop it. Or counter your base with all their workers and military.
Anything HuskyStarcraft can do is hardly really a solid strategy in my honest opinion (I played SC2 in Korea).
http://www.youtube.com/watch?v=vP3egyvH-DUIts fun but I think a betta proxy strategy is like maybe a Banshee with cloak because its easier to save a weak banshee than a stranded and slow thor.