it's famous because Tony Iommi used one in Sabbath.
never heard one in the flesh, but they have a following and fetch plenty of dosh on ebay.
yeah i read that. seems to do some fancy stuff though, or have its own unique sound.
im tempted.
im also tempted to stick with my crybaby from hell, and invest in another DD-3 and play with two delay pedals, see what wild vibes i can get from that.