I would like to have a spin on an an SF Laverda, and I always fancied owning one as a road bike. They don't come up for sale very often in Europe, and parts would probably be more expensive and less available than a Commando. I have heard that the SFC - the production racer - was a long, rangy, slow-steering bike, similar to a bevel twin, maybe? I rode a bevel Ducati 750 Sport on the track. It was a Steve Wynne-built bike converted to 900 with a V 2 gearbox and slipper clutch. Very nice, and solid and unflappable but not nimble and poor ground clearance with the stock pipes. Ducati carried that trait on with their belt 8 valvers, which were rock solid on fast sweepers but you couldn't snap them into corners, they had to be rolled in. The last 900 SS bevel I rode was a real beauty. Someone had got at the suspension, which was very plush, and the steering was surprisingly light. I never got to find out how this was achieved, but clearly it can be done.