Here are two more video demos. Just recorded on an Iphone. One is showing it in 5ths tuning, as well as demonstrating how well this type of instrument (IMO) blends way better with amplified instruments than a violin family instrument typically would (mostly due to frets, i think)
other demo is...
Just picked up this guy. It's a Lu-Mi Meares bass viol. Sounds and plays magnificently. It's constructed of spruce and sycamore (European maple), and weighs around 1.5kg.
mods: if it's inappropriate here, please feel free to move it.