FWIW, Farley Mowat used a Medalist for all the photographs he took in his later Arctic adventures - used in support of his chronicle (and some would say enhancement) in "Never Cry Wolf".
The Kodak lab in North Vancouver, BC, Canada that my father worked out of had a repair facility for Kodak cameras. The head technician there was excellent with Retinas and Medalists. Each year, before leaving for the Arctic, Mr. Mowat would bring in his Medalist for a tune up. He was apparently quite a character, and fascinating to talk Arctic photography with.
Ken Ruth is to Medalists as Greg Weber is to Koni-Omegas - they have expertise and experience with a niche product, and they are generous and savvy enough to share enough of it to become well known as a "go to" resource.