Apparently I did, but I shouldn't have expected a movie similar to Vampyros Lesbos. I bought this movie on DVD from a Dutch company called Japan Shock who never failed to deliver good solid trash from Asia and Italy and I was yet to be disappointed. This one comes close.
It's very hard to distinguish this as a Franco movie. I know that he made a lot of movies (182 according to the IMDb listing) and of course not all can be masterpieces, but this one is not very different from most German late '70s/early '80s softporno flicks, the ones they show late saturday night on cable television.
There were some moments that reminded me of older Franco movies. There were a couple of scenes where naked women were involved in sado-erotic performances with audiences watching - which, believe it or not, is a Franco trademark - and there is a climax (!) involving scorpions, an animal Franco seems to feel very related to.
I missed the completely useless zooms he is famous for though, and for once they'd have been completely in place.
Overall, if you like beautiful naked German girls making love, getting whipped and being tortured; if you like bad English overdubbing that goes as far as people not opening their mouth while they are talking; if you like poor editing, bad camerawork, lousy acting and the weakest plot ever, then this is the movie for you.