Just use a low-gloss UV. There are a ton of UV coatings out there at various gloss/matte levels. This can be further changed by the volume of coating applied.
I have beaten my head against the wall so many times with our sales and customer service people. It doesn't really matter whether we produce it via UV/Conventional/Digital/AQ/whatever. Set the quality specifications and let manufacturing figure out the best way to produce it. It is not in the customers' interest to arbitrarily dictate manufacturing methodology.