I watched it...it's pretty good, though it made me wonder why this guy's got, like, a quarter million hits on his videos, and I've got, like, seventy...maybe I need to buy a cheap video cam and film myself...is that really what makes the difference?
I still think the best guy doing the solo piccolo stuff is Jeff Schmidt...I watched one of his videos recently and it was more comprehensible to me...I concluded one of the reasons he has an interesting sound is because he's playing a left-handed bass -- with the strings upside-down he's able to let chords ring in a while playing melodies that would be hard to duplicate on a right-handed instrument. Curiously enough, I'm left-handed, but play right-handed -- left-handed guitars always seemed impossibly weird to me.
It definitely raises the question of what a bass and guitar is at a certain point, especially when you get into multi-stringed instruments. I just finished recorded an album where I use the piccolo bass to sub for what would usually be regular six-string guitar, and I was asking myself this question repeatedly...piccolo bass is sort of a mid-ranged instrument, so it's both and neither instruments, which introduces a whole new set of problems to the recording process...but it's also its strength in solo performance -- it resonates like a bass, but it's got some guitar-ish high end...
Ultimately I don't think it matters much as long as it sounds good.