If you look at the "old barbershop" signs on eBay, you often see a price for "razor honing" along with the other prices listed for "haircut" and "shampoo." That makes me think that while many people probably used strops and maybe even barber's hones at home, the real work of honing a razor from dull to shave-ready sharpness was probably done by the experts at the time, namely barbers.