I did it several times when I had a good setup or felt like I had an advantage; once, I lost because of it. In general, I'm against giving auto-wins, as this encourages opponents to play risky games. You can still win even after completely losing on creeps. I had a game with El Magnifico Sonic where I lost my entire army at the end of week 1 during a passage to secondary resources. But I didn't give up, and even after my opponent took Dragon Utopia, I pushed through, achieved GO, and captured his capital. As a result, I won without logistics