I would imagine that most people who've done it a couple times will find reviewing the material is much faster than learning it for the first time. I also suspect that many medical professionals do not live in their first choice of location, but if you think medical school is so much more appealing than some interview prep and a possible relocation what are you waiting for? I think the fact I could learn all this stuff for free is a pretty big mark in favor of it over medicine, but everyone's judgments are different, I suppose.