I am unaware of any production priced A.I. (Artificial Insemination) or I.I. (Instrumental Insemination) produced Cordovan queens. I am aware of a few queen producers that can provide I.I. Cordovan queens. They are quite expensive.http://www.ohioqueenbreeders.com/
As their website mentions the cordovan gene affects the color of bees that are homozygous for the cordovan gene, but only the color.
I have Cordovan Italians because I enjoy the bright yellow color of homozygous Cordovan Italians. I have raised a few queens from these Cordovan Italians. They will most likely be mated with non-cordovan drones. This will be obvious once they have produced brood. Their drones should be all-cordovan, but their workers/queens will not appear to have the cordovan coloration and should look just like my other local bees. I purchased my Cordovan Italian queens from http://www.koehnen.com/index.htm