the only quirk is the exhaust side bag,the infill bag is velcro'd to the bag,ive removed this and sit it in loose,the bag goes in back to front,has zips on both ends so its not a problem.
bought them recently from ebay.and they fit perfect.they are bit different from standard ones.exhaust side is smaller and it makes the pannier narrow from the bottom.so these bags are made wisely to fit the pannier.left side which is larger is the same.
These are the perfect solution. Waterproof and excellent value for money. I've used them when I had my GS and they fitted perfect.
I've got an un-opened set in the garage if your interested.