I've got the same question. We're just starting on this journey. Radiation and chemo will start on 4/22. My mom wants to wait and see how treatment goes before any discussion of a PEG.

Little Bird, CG to mother, diagnosed March 15, 2013, age 70, non-smoker, non-drinker
BOT, HPV+
Cisplatin and 35 days of radiation, completed June 13, 2013.
Looks like they got it all. (knock on wood)