Well yeah, if I thought about it more I probably could have gotten something else. However, I woke up the day after dealing with a REALLY shitty focus ring on my sigma 50, saw this deal, contacted the guy, and was able to swap the sigma for it. Like Sean said, I only added 750, it has autofocus, I can service it with my CPS membership if need be, and it's an improvement to what I had.
I wish the Rokkor-X 58 1.2 worked on FF, I've heard 50/50 results even with conversion :\