I have actually been told this is possible by a number of scripters. The most plausible method for making this possible seems to be by using a bot.
Greek, basically if you look through the brick, instead of seeing the bricks behind it, all you see is the skybox, ground, and players (because people can't be hidden). It's virtually the same effect as that which used to be attained by setting the color of your hat leaf thingy to max alpha (many used this as a way to cheat and see where other players were through bricks).
If the newest updates have stopped this from being possible, I will be most disappointed. Badspot really should add support for cloaking etc.