I am currently applying too, so AndyMilonakis would definitely be a better reviewer for you. If you are just interested in getting as many people to read it as possible, then I would not mind reading your PS. If you want to PM me, I could probably have it back to you by tomorrow afternoon.
I was just about to send off some secondaries when I thought about getting some feedback on the MSTP personal statement (ie why MD/PhD and research?). Anyone who gives me comments will receive all the good karma I can spare!