JC & Robin,
No personal experience here, but I believe any area that is radiated does not grow hair again. I believe some of the men have mentioned never having to shave again.
Heather found that she could tolerate Nutren, which is made by Nestle, better than Ensure. Also, they just ordered Jevity for her while she is in the hospital because it is less likely to contribute to any mucous problems. As to taste, I can't vouch for either one, but going in a PEG, taste isn't an issue.
Good luck,
Rosie