Hi All,
FWIW, the consulate in Vienna just now told me that I need a B-1/B-2 visa if I want to fly for pleasure with my FAA certificate.
Just filled out the paperwork, took me about two hours. Supposedly takes one day to have the visa issued. So, not a big hassle, and whether I enter on the visa waiver program or on a B-visa makes not difference to me.
KR, Mike