I did it, but I struggled. Last semester, I took Orgo 2 and the MCAT in April. (I was working full time, too so that was also a factor.)
The biggest problem is that my Orgo course that ended in the end of May hadn't gotten to some of the really important stuff by the time the MCAT came around in April. Basically, I hadn't studied any oxygen containing compounds except for alchohols.
I did my best to learn this on my own. I was taking a Kaplan course, so I bugged my teacher a lot. When I really learned it later in the course, I realized that my grasp of the material had been tenuous.
In the end, I got an 11V 12P 11B. But I think I got lucky, in that my exam was not too orgo intensive. Some people on this list say that they had 70% orgo. I would have been in trouble if that had been my exam.