I dont but from my research Scandium is just aluminum with a Scandium additive to make it lighter and stronger. So say it has a 'softer' ride than just plane old alum.
"Easton SC7000 Scandium tubing is actually 7000 series aluminum alloyed with Andhurst's scandium. The alloy itself isn't any lighter than other aluminum alloys but it's much stronger and more resilient. Since Aluminum tubing loses strength easily when flexed it has always been thicker or larger and therefore more stiff. The Scandium-aluminum alloy can achieve the needed strength with less material and smaller tubing. It's the smaller tubing that gives you the slight,complient flex found in steel frames.
The resulting frames are stronger, more flexible and are said to be as light as 2 1/4 lbs! They are also much cheaper than titanium!