David,
One person with two primaries, one from HPV and the other potentially from smoking sound possible enough, but so far non of the studies have reported this.

They do seem to routinely find that at least 20% of the HPV caused SCC is found in people who also happen to smoke.

The percentage of HPV caused OC found in smokers should closely parallel the smoking rate, and (guess what!) that rate is also about 20% of US adults.

Don
TXN2bM0 Stage IVa SCC-Occult Primary
FNA 6/6/08-SCC in node<2cm
PET/CT 6/19/08-SCC in 2nd node<1cm
HiRes CT 6/21/08
Exploratory,Tonsillectomy(benign),Right SND 6/23/08
PEG 7/3/08-11/6/08
35 TomoTherapy 7/16/08-9/04/08 No Chemo
Clear PET/CT 11/15/08, 5/15/09, 5/28/10, 7/8/11