I don't have experience with feeding winged adults to my chameleons, primarily because to me, adults are used solely as breeders at my house. It takes so long for them to reach maturity, I choose to keep them for breeding. I have heard someone on here state that there is the possibility of a chameleon sustaining a mouth injury due to the Dubies spines on the legs. So I would be cautious.
My male Ambilobe takes down adult male dubais but I leave the adult females as breeders. My female ambilobes never get adults they only get nymphs. My male Veiled is too young to try adults, so he and my female get nymphs which they all love.