I'm not sure how many hear have experiences that speak to this, but I had a couple of interviews where I was first and I wonder how this might have affected my chances. People say that going first means you could set a high bar and they will compare everyone to you (but god forbid someone passes your bar) or you may fade into a fuzzy memory by the time they are done interviewing and be at disadvantage. My own experience was that SCs seemed to be a bit disorganized for my visit (some meetings fell through or weren't well attended), which I imagine they learned from/improved upon for the subsequent visits, which may have given those candidates a slight advantage.
Best to be first, last, or somewhere in between?