Since I often drive 6 hours to receive 2-3 hours of supervision, I strongly recommend this option for a portion (I found that being present in an ongoing group is an invaluable learning experience) of the supervision. It would make it much easier to have all of the materials at your fingertips rather than taking them from one office to another. It would make me available at my home institution during regular work hours (in stead of being on the road) and save the state money in terms of vehicle expense.