I've just sold my SV, but as 125,000 kms in 5 years demonstrates, the bike is capable of serving as a superb mid-displacement sport-tourer - light, comfy, quick, and cheap! And if you tour a lot, hard luggage is totally the ticket: convenient, secure, waterproof, and slick-looking.
For sale is the rack system from my bike: the Givi KL529. This was the state of the art for SVs for a bit, and there were a lot of people 'fishing' for available stock when Givi ceased production about 3 years ago.
The intended mounting requires BOTH the pannier carriers AND the side-arms, but I used the side carriers a lot without the arms. However, this places extra strain on the little 6mm bolt on the rear seat grip-rail that is used as an attachment point, as two failures on my personal system demonstrated. The solution is to drill out the 6mm hole and re-tap it for an 8mm bolt - presto, no breakage, ever!
My set-up has seen a lot of use, and some areas could use a good going over with a wire brush and a fresh coat of paint (typical of Givi 'quality' finish!), but it's structurally flawless. The full rack set was over $300 new, and given the rarity and desirability of the system, I'm not going to 'give this away'. I thought $150 seemed reasonable.
The system is available with either a Givi Monolock or Givi Monokey rear plate - your choice.
In use, with Kappa E21 panniers: