I won't try to talk you into putting a rack on your Silvio, but it is what I did, and rather like the way it came out. I didn't want something big and heavy, so I went with a Tubus Airy, made of titanium. I like the more minimalist look and how it tapers in toward the top. As racks go, it doesn't draw attention, and at 360 grams (including mounting hardware), it's no boat anchor (yet it's rated to carry up to 60 pounds of stuff). It carries panniers just as it should, but when the bags are off and I go for a ride, this bike still flies.
Two issues: this rack can be hard to find, and it ain't cheap. I found this one in Germany, in a eBay auction.
Komponenten Rennrad. Der Werkstoff Titan ist extrem witterungsbeständig und hochfest, was den AIRY zu einem nahezu unverwüstlichen Gepäckträger macht. Aufgrund seiner puristischen schlanken Form passen am besten Front-Taschen zum AIRY.
www.ebay.com
I figure options are good.