No I dont believe there is more of a risk. Having a few diffrent PO boxes myself(not at the same time). My only problem was the first PO Box the lady running the PO room got way to interested in my business. Got another PO in the same town diffrent postoffice, and the woman running the PO room always likes to put in some smart comment when any of my parcels rattle, but she is cool about it(could have called John Law long ago).

Drew