Design FIRST
Vorsprung Visionary
Pretty incredible the TUV hasn't done this years ago already.
TÜV, as well as Euro NCAP, ADAC, Dekra and GTÜ, have indeed been scrutinizing the issue. In essence, they, so far, have voiced no reservations regarding a flush fit of exterior doorhandles per se. What they are concerning themselves with is the requirement that exterior doorhandles have an intuitively, manually engagable release and open mechanism that is in no way dependent the vehicles electrical/electronic circuitry. "Intuitive" meaning the handle popping out by applying moderate manual pressure (a press of a thumb, for example and NOT prying the handle forward) and presenting a grip that can accomodate a hand.