Hey Greg, I was hoping you'd chime in!
You can talk about the carbon print itself... we don't need to censor ourselves when it comes to digital negs, just don't go in depth about those aspects. Afterall... I use a digital lightmeter sometimes!
As Hexavalent mentions, the light reflecting property might pose a problem, however, using carbro would eliminate this problem. There is at least 1 paper I know of that is suitable for carbro; David Lewis' bromoil paper and it is reasonably priced; <$1/8x10".