Upton's YouTube channel is nothing less than a savage and insidious attempt at spreading ever more lethal forms of GAS amongst the DB community. I encourage other manufacturers to follow suit.
In any case, this beast sounds wonderful on my computer speakers (
http://www.youtube.com/watch?v=LUzcK9AS0RU) but doesn't appear on Upton's website. A hybrid flatback - aimed at Shen's SB190 and Christopher's 401, I assume? Anyone spotted one in the wild?