Not that I recall, I don't think the Blood Pact appear until much later and the only mention of Chaos Astartes in the later books is on Gereon in Traitor General, and a part of my brain is telling me they were Noise Marines if anything.
Modellers' licence, edonil. If you want to do it, do it. If you like it, do it. If you don't like it, do it, you might like it.