If you don't have a tremendous amount of patience don't go advanced medical. I was Adv Med for 2 weeks and ressed exactly 0 people, outside of a test I setup with someone on the phone just to see how it worked.
No one waits long enough. I was hoping that as an outfit people would not instantly release when I was on, but everyone is just so used to releasing as soon as it pops up it never worked. The only few times someone did wait I had just died to.
Anyways, supposed to be a super needed ability, but by far the hardest role to play. If you want to scream at the "stupid fucking idiots" at the screen, it is a fun role to pick
Anyways, if you are only doing outfit squads, it would probaly be ok after a couple weeks, especialy as more people use the ventrilo software (see warcats sticky post above).