Ostra meets Gaggleman

These two illustrations are believed to be from an artist using the pseudonyms Judie Delcourt and Gaggleman. They also seem to be the only two sketches known to be from this artist since all of her (or his) artwork are in color.
The artworks were done inspired by photos from Ostra Studio, this studio was one of the first to produce fetish and bdsm photos and sell those.