Yeah this is kinda old, and controversial (as many argue you are not helping the testing process by bypassing the official patching process)
But on the other hand, the official patcher does not continue seeding the file, while using utorrent actually helps others by seeding even after you are finished and playing happily.
For the record I've done this yes, completely works. I'm doing it now for my new computer (different files for different OS). Just make sure you keep seeding after, help the world.