I rotated there as a fourth year medical student because you have the opportunity to see some path while doing derm (and I was applying to path programs). Overall, I had a very positive experience with the program.
1 - most days you follow a resident through clinic. As a fourth year I was not required to write any notes. I just got to sit back and learn.
2 - There were opportunities to follow residents in procedure clinics. If you did one of these you were often allowed to help out (biopsies, lasers, etc).
3 - The Mohs surgeons let you hang out with them for a day or two, so you get to learn about that.
Overall, a very laid back rotation and I learned a fair amount.