Vectibix (panitumumab) experiences - advice please

Hi all, my husband's oncologist yesterday suggested adding Vectibix to his Folfiri chemo in 2 weeks.  His tumors previously removed have been tested for the KRAS mutation and he would likely benefit from this new drug. He is quite upset about the side effects of an acne-type rash.  Oncologist had talked about adding Avastin a month or so ago, but we were a little reluctant to add just after having another blockage and 2nd c-diff in a few months.  At that point, we wanted to let his bowels try to heal a little longer before adding a drug that could cause a perforated bowel.  Oncologist at that time agreed with waiting and getting a new scan to see what was going on.  Two chemo treatments down with just Folfiri and this week his parotid gland became infected again.  A new antibiotic added Monday and chemo this week cancelled due to the infection.  Scan results yesterday showed no new growth but the two lymph nodes he's currently being treated for have grown a little.  Onc was not surprised since he'd been off chemo for 4 weeks after c-diff in May.  Now onc. wants to add Vectibix instaed of Avastin and my husband is thinking it's a bad thing.  He's worried about "looking" like a cancer patient since he's been looking pretty good.  He lost most of his hair in May and that has bothered him too since he says now everyone can see his a cancer patient.  I know it sounds shallow and in the big scheme of cancer, it's not really that important.  He wears a hat most of the time and doesn't work.  Onc said 30% of people have no problematic rash and about 1 in 5 get a troubling rash. 

Has anyone had Vectibix added to their Folfiri and what has your experience been?  Thanks in advance for any advice you can give me.  He is Stage IV with distant lymph node involvement now in his upper belly area.  Prior tumors removed from colon in December 2012 and small intestines in January 2014.

Linda