When I was looking into it, the person I was speaking to was a generalist and did not have much experience with med LOC (she kept on saying she needed to ask about things that the advisors from the other banks just knew).
I also recall, that you only got their cards/benefits during med schools as opposed to throughout your residency.
I also think you do not get a grace period
Personally, I liked that the interest payments with Scotia just add back to the LOC (one less thing to worry about)