There is at least one civvy self sponsored ETP. I met her at a GAPAN do a couple of years ago. Very impressive she was too.
She is just doing acceptance flights at Airbus - which some people call test flights. She wouldn't have been called for the display of the 350s ....
ETPS - a private business now with Qinetiq - is offering abbreviated tailor-made courses (one or thwo months) for production factory pilots. Not much to do with the full one-year TP course - but even after a two-days course, you can get from them the badge and keys Handler....
Being a woman she had some rules being relaxed for her, as is often the case.