Most medical schools are a hybrid of traditional lectures and PBL. Here, SLU no exception. It's not that bad though sometimes PBL in general for any school is hard to facilitate and plan for certain topics. It can be inefficient. Nevertheless, there should be no reason in having a difficult time in working with your peers on projects. That type of comraderie (sp?) is necessary on wards come your third year.
In a nutshell, the PBL here at SLU isn't too bad and is minimal. I think I'd go crazy if it was 100% traditional lectures. It's nice to get out once in awhile out of the classrooms.