I connected to the US server, then used launcher to try EU server at the same time. I connected but spawned in in Ironforge, somewhere near the Deep Run Trame. Very strange. You cannot scavange in IF , but i did catch a Mountain Whitefish in the Forelorn Cavern pool, and accidently killed a hunter's bear pet in a moment of panic when I saw it near me.
US patcher works - server isn't online to play though.