Well, I stayed up until 2:30 A.M. rereading Scorpius, and I found the Dunhill reference on Page 211 of the hardcover edition. James Bond is getting ready to leave a safe house in London when:
"He closed the compartment and carefully packed a razor and travel set of Dunhill Edition shave cream and cologne -- another standard, provided by Mrs. Findlay who, as housekeeper, felt her gentlemen should have the best."
So Dunhill Edition is not Bond's choice, but he seems to regard it approvingly. I'm still working on where I saw the Dunhill Blend 30 reference.