I found this and thought you might find it interesting:
http://www.ebay.co.uk/itm/Mens-PU-Le...162030100 820
It is a faux leather, string bikini/tanga style thong with metal studs. The front has a centre seam allowing for a pouched fit. A less metallic faux leather would be more like the photo and of course the studs are in the wrong place. If it had a bikini rear rather than a thong rear it would be very similar to your objective. Available in blue.
Hope you like.